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Union Pacific Steam Locomotives, 1915-1962

Part 9, OSL 2500 to LA&SL 2735

This page was last updated on February 28, 2015.

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OSL 2-8-2 -- 15 locomotives

1915 OSL
Number
First
Number
Builder Builder
Number
Date
Built
Fuel Date
Vacated
Later
Number
Notes
OSL 2500 OSL 1200 Baldwin 39840 May 1913   1923 LA&SL 2726 1
OSL 2501 OSL 1201 Baldwin 39841 May 1913   1923 LA&SL 2727 2
OSL 2502 OSL 1202 Baldwin 39842 May 1913   1923 LA&SL 2728 3
OSL 2503 OSL 1203 Baldwin 39843 May 1913   1923 LA&SL 2729 4
OSL 2504 OSL 1204 Baldwin 39844 May 1913 Oil Feb 1954   5
OSL 2505 OSL 1205 Baldwin 39845 May 1913   1923 LA&SL 2730 6
OSL 2506 OSL 1206 Baldwin 39875 May 1913 Coal Jan 1949   7
OSL 2507 OSL 1207 Baldwin 39876 May 1913 Coal Mar 1952   8
OSL 2508 OSL 1208 Baldwin 39955 Jun 1913 Oil Nov 1947   9
OSL 2509 OSL 1209 Baldwin 39956 Jun 1913   1923 LA&SL 2731 10
OSL 2510 OSL 1210 Baldwin 39957 Jun 1913 Oil Sep 1956   11
OSL 2511 OSL 1211 Baldwin 39958 Jun 1913 Oil Jun 1954   12
OSL 2512 OSL 1212 Baldwin 39959 Jun 1913 Coal Nov 1947   13
OSL 2513 OSL 1213 Baldwin 39960 Jun 1913 Coal Feb 1948   14
OSL 2514 OSL 1214 Baldwin 39961 Jun 1913   1923 LA&SL 2732 15

Description:

CS Class: MK-5
Cabside Class: MK-63
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 51,075 pounds
Weight on Drivers: 214,050 pounds
Weight in Working Order (Engine Only): 286,120 pounds
Weight in Working Order (Engine and Tender): 456,417 pounds
Fuel: (see above)

General Notes:

a. Seven OSL 2500 series 2-8-2s were sent to LA&SL in 1923, as LA&SL 2700 series locomotives.
b. OSL 2506, 2507, 2511, 2512 were equipped with Duplex stokers
c. Some OSL 2500 class 2-8-2s had higher boiler pressure, allowing 53,628 pounds tractive effort

Notes:

1. OSL 2500 was built as OSL 1200 in 1913; to OSL 2500 in 1915; to LA&SL 2726 in 1923; vacated in 1956
2. OSL 2501 was built as OSL 1201 in 1913; to OSL 2501 in 1915; to LA&SL 2727 in 1923; vacated in 1948
3. OSL 2502 was built as OSL 1202 in 1913; to OSL 2502 in 1915; to LA&SL 2728 in 1923; vacated in 1956
4. OSL 2503 was built as OSL 1203 in 1913; to OSL 2503 in 1915; to LA&SL 2729 in 1923; vacated in 1948
5. OSL 2504 was built as OSL 1204 in 1913; to OSL 2504 in 1915; vacated in 1954
6. OSL 2505 was built as OSL 1205 in 1913; to OSL 2505 in 1915; to LA&SL 2730 in 1923; vacated in 1956
7. OSL 2506 was built as OSL 1206 in 1913; to OSL 2506 in 1915; vacated in 1949
8. OSL 2507 was built as OSL 1207 in 1913; to OSL 2507 in 1915; vacated in 1952
9. OSL 2508 was built as OSL 1208 in 1913; to OSL 2508 in 1915; vacated in 1947
10. OSL 2509 was built as OSL 1209 in 1913; to OSL 2509 in 1915; to LA&SL 2731 in 1923; vacated in 1957
11. OSL 2510 was built as OSL 1210 in 1913; to OSL 2510 in 1915; vacated in 1956
12. OSL 2511 was built as OSL 1211 in 1913; to OSL 2511 in 1915; vacated in 1954
13. OSL 2512 was built as OSL 1212 in 1913; to OSL 2512 in 1915; vacated in 1947
14. OSL 2513 was built as OSL 1213 in 1913; to OSL 2513 in 1915; vacated in 1948
15. OSL 2514 was built as OSL 1214 in 1913; to OSL 2514 in 1915; to LA&SL 2732 in 1923; sold to Six Companies in September 1932 for use in the construction of Boulder Dam; sold back to UP in March 1936; vacated in 1947
   

OSL 2-8-2 -- 10 locomotives

OSL
Number
Builder Builder
Number
Date
Built
Date
Vacated
1920 LA&SL
Number
1923 LA&SL
Number
OSL 2515 (1st) Lima 5575 Sep 1917 Jul 1918 LA&SL 3709 LA&SL 2709
OSL 2516 (1st) Lima 5576 Sep 1917 Jul 1918 LA&SL 3710 LA&SL 2710
OSL 2517 (1st) Lima 5577 Sep 1917 1923   LA&SL 2733
OSL 2518 (1st) Lima 5578 Sep 1917 1923   LA&SL 2734
OSL 2519 (1st) Lima 5579 Sep 1917 Jul 1918 LA&SL 3711 LA&SL 2711
OSL 2520 (1st) Lima 5580 Sep 1917 Jul 1918 LA&SL 3712 LA&SL 2712
OSL 2521 (1st) Lima 5581 Sep 1917 1923   LA&SL 2735
OSL 2522 (1st) Lima 5582 Sep 1917 Jul 1918 LA&SL 3713 LA&SL 2713
OSL 2523 (1st) Lima 5583 Sep 1917 Jul 1918 LA&SL 3714 LA&SL 2714
OSL 2524 (1st) Lima 5584 Sep 1917 Jul 1918 LA&SL 3715 LA&SL 2715

Description:

Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches

General Notes:

a. Seven OSL 2515 series 2-8-2s were sent to LA&SL in July 1918, as LA&SL 3700 series locomotives, later becoming LA&SL 2700 series.
b. Three OSL 2515 series 2-8-2s were sent to LA&SL in 1923, as LA&SL 2700 series locomotives.
c. Some OSL 2500 class 2-8-2s had higher boiler pressure, allowing 53,628 pounds tractive effort
   

OSL 2-8-2 -- 10 locomotives

OSL
Number
Builder Builder
Number
Date
Built
Date
Vacated
1923 UP
Number
OSL 2525 (1st) Baldwin 48997 Jun 1918 Oct 1923 UP 2311 (2nd)
OSL 2526 (1st) Baldwin 49159 Jul 1918 1923 UP 2312 (2nd)
OSL 2527 (1st) Baldwin 49227 Jul 1918 1923 UP 2313 (2nd)
OSL 2528 (1st) Baldwin 49295 Jul 1918 1923 UP 2314 (2nd)
OSL 2529 (1st) Baldwin 49296 Jul 1918 1923 UP 2315
OSL 2530 (1st) Baldwin 49359 Jul 1918 1923 UP 2316
OSL 2531 (1st) Baldwin 49360 Jul 1918 1923 UP 2317
OSL 2532 (1st) Baldwin 49393 Jul 1918 1923 UP 2318
OSL 2533 Baldwin 49394 Jul 1918 1923 UP 2319
OSL 2534 Baldwin 49472 Aug 1918 1923 UP 2320

Description:

CS Class: MK-8
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches

General Notes:

a. Ten OSL 2525 series 2-8-2s were sent to UP in 1923, as UP 2300 series locomotives.
b. OSL 2525- 2534 were equipped with Street stokers
c. Some OSL 2500 class 2-8-2s had higher boiler pressure, allowing 53,628 pounds tractive effort
   

OSL 2-8-2 -- 4 locomotives

1923 OSL
Number
First
Number
Second
Number
Date To
OSL
Builder Builder
Number
Date
Built
Fuel Date
Vacated
OSL 2515 (2nd) UP 714 UP 2214 1923 Brooks 51622 Sep 1912 Oil Sep 1956
OSL 2516 (2nd) UP 715 UP 2215 1923 Brooks 51623 Sep 1912 Coal Apr 1955
OSL 2517 (2nd) UP 717 UP 2217 1923 Brooks 51625 Sep 1912 Oil Mar 1956
OSL 2518 (2nd) UP 718 UP 2218 1923 Brooks 51626 Sep 1912 Coal May 1947

Description:

CS Class: MK-4
Cabside Class: MK-63 (MacA-63 after WWII)
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 53,628 pounds
Weight on Drivers: 214,050 pounds
Weight in Working Order (Engine Only): 286,120 pounds
Weight in Working Order (Engine and Tender): (varied due to different tender styles)
Fuel: (see above)

General Notes:

a. OSL 2515-2518 were built as UP 714-718 in 1912; renumbered to UP 2214-2218 in 1915-1916; sent to OSL in 1923 and renumbered to OSL 2515-2518.
b. OSL 2516, 2518 were equipped with Duplex stokers.
   

OSL 2-8-2 -- 6 locomotives

1923 OSL
Number
First
Number
Second
Number
Date To
OSL
Builder Builder
Number
Date
Built
Fuel Date
Vacated
OSL 2519 (2nd) UP 720 UP 2220 1923 Baldwin 39587 Apr 1913 Coal May 1956
OSL 2520 (2nd) UP 724 UP 2224 1923 Baldwin 39591 Apr 1913 Oil Dec 1957
OSL 2521 (2nd) UP 725 UP 2225 1923 Baldwin 39592 Apr 1913 Oil Jun 1958
OSL 2522 (2nd) UP 728 UP 2228 1923 Baldwin 39595 Apr 1913 Coal Nov 1947
OSL 2523 (2nd) UP 733 UP 2233 1923 Baldwin 39600 Apr 1913 Coal Dec 1946
OSL 2524 (2nd) UP 741 UP 2241 1923 Baldwin 39674 Apr 1913 Coal Mar 1954

Description:

CS Class: MK-5
Cabside Class: MK-63 (MacA-63 after WWII)
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 53,628 pounds
Weight on Drivers: 214,050 pounds
Weight in Working Order (Engine Only): 286,120 pounds
Weight in Working Order (Engine and Tender): (varied due to different tender styles)
Fuel: (see above)

General Notes:

a. OSL 2519-2524 were built as UP 720-741 in 1913; renumbered to UP 2220-2241 in 1915-1916; sold to OSL in 1923 and renumbered to OSL 2519-2524.
b. In 1923 OSL traded ten locomotives (OSL 2525-2534) in the MK-8 class to UP for 18 UP locomotives in the MK-4, MK-5, MK-6, and MK-7 classes.
c. OSL 2519, 2522, 2523. 2524 were equipped with Duplex stokers.
   

OSL 2-8-2 -- 3 locomotives

1923 OSL
Number
First
Number
Second
Number
Date To
OSL
Builder Builder
Number
Date
Built
Fuel Date
Vacated
OSL 2525 (2nd) UP 746 UP 2246 1923 Lima 1450 Oct 1914 Oil Nov 1954
OSL 2526 (2nd) UP 754 UP 2254 1923 Lima 1458 Nov 1914 Coal Jan 1949
OSL 2527 (2nd) UP 758 UP 2258 1923 Lima 1462 Nov 1914 Coal Jul 1950

Description:

CS Class: MK-6
Cabside Class: MK-63 (MacA-63 after WWII)
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 53,628 pounds
Weight on Drivers: 214,050 pounds
Weight in Working Order (Engine Only): 286,120 pounds
Weight in Working Order (Engine and Tender): (varied due to different tender styles)
Fuel: (see above)

General Notes:

a. OSL 2525-2527 were built as UP 746-758 in 1914; renumbered to UP 2246-2258 in 1915-1916; sold to OSL in 1923 and renumbered to OSL 2525-2527.
b. In 1923 OSL traded ten locomotives (OSL 2525-2534) in the MK-8 class to UP for 18 UP locomotives in the MK-4, MK-5, MK-6, and MK-7 classes.
c. OSL 2526, 2527 were equipped with Duplex stokers.
   

OSL 2-8-2 -- 5 locomotives

1923 OSL
Number
First
Number
Date To
OSL
Builder Builder
Number
Date
Built
Fuel Date
Vacated
OSL 2528 (2nd) UP 2266 1923 Baldwin 45842 Jun 1917 Oil Jan 1956
OSL 2529 (2nd) UP 2268 1923 Baldwin 45927 Jul 1917 Oil May 1956
OSL 2530 (2nd) UP 2275 1923 Baldwin 46155 Aug 1917 Oil Nov 1947
OSL 2531 (2nd) UP 2277 1923 Baldwin 46172 Aug 1917 Coal Mar 1948
OSL 2532 (2nd) UP 2278 1923 Baldwin 46212 Aug 1917 Coal Feb 1948

Description:

CS Class: MK-7
Cabside Class: MK-63 (MacA-63 after WWII)
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 53,628 pounds
Weight on Drivers: 214,050 pounds
Weight in Working Order (Engine Only): 286,120 pounds
Weight in Working Order (Engine and Tender): (varied due to different tender styles)
Fuel: (see above)

General Notes:

a. OSL 2528-2532 were built as UP 2266-2278 in 1917; sold to OSL in 1923 and renumbered to OSL 2528-2532.
b. In 1923 OSL traded ten locomotives (OSL 2525-2534) in the MK-8 class to UP for 18 UP locomotives in the MK-4, MK-5, MK-6, and MK-7 classes.
c. OSL 2531, 2532 were equipped with Duplex stokers.
   

OSL 2-8-2 -- 19 locomotives (USRA Pattern)

Road
Number
Builder Builder
Number
Date
Built
Date
Vacated
Notes
OSL 2535 Schenectady 60235 Dec 1918 Jun 1953  
OSL 2536 Schenectady 60236 Dec 1918 Apr 1946 1
OSL 2537 Schenectady 60237 Dec 1918 Jul 1959 2
OSL 2538 Schenectady 60238 Dec 1918 Feb 1946 1
OSL 2539 Schenectady 60239 Dec 1918 Jul 1954  
OSL 2540 Schenectady 60330 Jan 1919 Jul 1956  
OSL 2541 Schenectady 60331 Jan 1919 Oct 1957  
OSL 2542 Schenectady 60332 Jan 1919 Mar 1948  
OSL 2543 Schenectady 60333 Jan 1919 Dec 1953  
OSL 2544 Schenectady 60334 Jan 1919 Jun 1954  
OSL 2545 Schenectady 60335 Jan 1919 Aug 1956  
OSL 2546 Schenectady 60336 Jan 1919 Mar 1954  
OSL 2547 Schenectady 60337 Jan 1919 Mar 1956  
OSL 2548 Schenectady 60338 Jan 1919 Mar 1955  
OSL 2549 Schenectady 60339 Jan 1919 Jul 1954  
OSL 2550 Schenectady 60340 Jan 1919 Jun 1954  
OSL 2551 Schenectady 60341 Jan 1919 Jul 1954  
OSL 2552 Schenectady 60342 Jan 1919 Aug 1956  
OSL 2553 Schenectady 60343 Jan 1919 Mar 1949  
OSL 2554 Schenectady 60344 Jan 1919 Apr 1953  

Description:

CS Class: MK-Special (USRA Pattern)
Cabside Class: MK-63
Drive Wheel Diameter: 63 inches
Cylinders: 26x30 inches
Maximum Tractive Effort: 54,700 pounds
Weight on Drivers: 220,000 pounds
Weight in Working Order (Engine Only): 292,000 pounds
Weight in Working Order (Engine and Tender): 484,300 pounds
Fuel: Coal

General Notes:

a. OSL 2535-2554 were equipped with Duplex stokers

Notes:

1. OSL 2536 and 2538 were wrecked on 12 February 1946 at Bickel, Idaho
2. OSL 2537 was donated to Walla Walla, Washington
   

OSL 2-8-2 -- 10 locomotives

1923 OSL
Number
First
Number
Second
Number
Date To
OSL
Builder Builder
Number
Date
Built
Date
Vacated
Notes
OSL 2555 LA&SL 3716 LA&SL 2716 1923 Brooks 62872 Feb 1921 Nov 1957  
OSL 2556 LA&SL 3717 LA&SL 2717 1923 Brooks 62873 Feb 1921 Aug 1956  
OSL 2557 LA&SL 3718 LA&SL 2718 1923 Brooks 62874 Feb 1921 Dec 1955  
OSL 2558 LA&SL 3719 LA&SL 2719 1923 Brooks 62875 Feb 1921 Jul 1954  
OSL 2559 LA&SL 3720 LA&SL 2720 1923 Brooks 62876 Feb 1921 May 1956  
OSL 2560 LA&SL 3721 LA&SL 2721 1923 Brooks 62877 Feb 1921 Aug 1956  
OSL 2561 LA&SL 3722 LA&SL 2722 1923 Brooks 62878 Feb 1921 Apr 1954  
OSL 2562 LA&SL 3723 LA&SL 2723 1923 Brooks 62879 Feb 1921 Jul 1954  
OSL 2563 LA&SL 3724 LA&SL 2724 1923 Brooks 62880 Feb 1921 Nov 1947  
OSL 2564 LA&SL 3725 LA&SL 2725 1923 Brooks 62881 Feb 1921 May 1959 1

Description:

CS Class: MK-10
Cabside Class: MK-63 (MacA-63 after WWII)
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 53,628 pounds
Weight on Drivers: 228,000 pounds
Weight in Working Order (Engine Only): 300,000 pounds
Weight in Working Order (Engine and Tender): (varied due to different tender styles)
Fuel: Coal

General Notes:

a. OSL 2555-2564 were built as LA&SL 3716-3725 in 1921; renumbered to LA&SL 2716-2725 in (?); sold to OSL in 1923 and numbered as OSL 2555-2564
b. In 1923 LA&SL traded ten MK-10 locomotives (LA&SL 2716-2725) to OSL in return for ten OSL 2500 series locomotives in the OSL 2500-2521 group; the ten LA&SL locomotives were renumbered as OSL 2555-2564.
c. In 1923 OSL traded ten 2500 series locomotives to LA&SL for the above ten LA&SL 2700 series locomotives.
d. OSL 2555-2564 were equipped with Duplex stokers
e. Some OSL 2500 class 2-8-2s had higher boiler pressure, allowing 53,628 pounds tractive effort

Notes:

1. OSL 2564 donated to Mojave Foundation, Oro Grande, California; to Orange Empire Railway Museum, Perris, California, in 1996; moved to Perris in July 1997.
   

LA&SL 2-8-2 -- 9 locomotives

Road
Number
First
Number
Builder Builder
Number
Date
Built
Date
Vacated
Notes
LA&SL 2700 LA&SL 3700 Schenectady 54394 Jan 1914 Nov 1947  
LA&SL 2701 LA&SL 3701 Schenectady 54395 Jan 1914 Sep 1932 1
LA&SL 2702 LA&SL 3702 Schenectady 54396 Jan 1914 Apr 1955  
LA&SL 2703 LA&SL 3703 Schenectady 54397 Jan 1914 Feb 1956  
LA&SL 2704 LA&SL 3704 Schenectady 54398 Jan 1914 Mar 1955  
LA&SL 2705 LA&SL 3705 Schenectady 54399 Jan 1914 Jul 1947  
LA&SL 2706 LA&SL 3706 Schenectady 54400 Jan 1914 May 1947  
LA&SL 2707 LA&SL 3707 Schenectady 54401 Jan 1914 Apr 1948 1
LA&SL 2708 LA&SL 3708 Baldwin 41762 Oct 1914 Jul 1947  

Description:

Cabside Class: MK-63
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 51,075 pounds
Weight on Drivers: 217,800 pounds
Weight in Working Order (Engine Only): 285,100 pounds
Weight in Working Order (Engine and Tender): (varied due to different tender styles)
Fuel: Oil

Notes:

1. LA&SL 2701 and 2707 were sold to Six Companies in September 1932 for use in the construction of Boulder Dam; LA&SL 2707 was sold back to UP in March 1936
   

LA&SL 2-8-2 -- 1 locomotive

Road
Number
First
Number
Builder Builder
Number
Date
Built
Date
Vacated
Notes
LA&SL 2708 LA&SL 3708 Baldwin 41762 Oct 1914 Jul 1947  

Description:

Cabside Class: MK-63
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 53,628 pounds
Weight on Drivers: 211,700 pounds
Weight in Working Order (Engine Only): 282,500 pounds
Weight in Working Order (Engine and Tender): 465,150 pounds
Fuel: Oil
 

LA&SL 2-8-2 -- 7 locomotives

1918 LA&SL
Number
First
Number
Second
Number
Date To
LA&SL
Builder Builder
Number
Date
Built
Date
Vacated
LA&SL 2709 OSL 2515 (1st) LA&SL 3709 1918 Lima 5575 Sep 1917 Aug 1955
LA&SL 2710 OSL 2516 (1st) LA&SL 3710 1918 Lima 5576 Sep 1917 Jun 1954
LA&SL 2711 OSL 2519 (1st) LA&SL 3711 1918 Lima 5579 Sep 1917 Oct 1957
LA&SL 2712 OSL 2520 (1st) LA&SL 3712 1918 Lima 5580 Sep 1917 Sep 1947
LA&SL 2713 OSL 2522 (1st) LA&SL 3713 1918 Lima 5582 Sep 1917 Jun 1954
LA&SL 2714 OSL 2523 (1st) LA&SL 3714 1918 Lima 5583 Sep 1917 May 1956
LA&SL 2715 OSL 2524 (1st) LA&SL 3715 1918 Lima 5584 Sep 1917 Oct 1954

Description:

CS Class: MK-7
Cabside Class: MK-63
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 51,075 pounds
Weight on Drivers: 214,050 pounds
Weight in Working Order (Engine Only): 286,120 pounds
Weight in Working Order (Engine and Tender): (Varied due to different tender styles)
Fuel: Oil

General Notes:

a. In June 1920 OSL traded seven 2515 series locomotives to LA&SL for six LA&SL 3800 series 2-10-2 locomotives, which became OSL 5300-5305; the former OSL 2515 series were renumbered to the LA&SL 3700 series, and renumbered again to the LA&SL 2700 series.
   

LA&SL 2-8-2 -- 10 locomotives

Road
Number
First
Number
Builder Builder
Number
Date
Built
Date
Vacated
1923 OSL
Number
LA&SL 2716 LA&SL 3716 Brooks 62872 Feb 1921 May 1923 OSL 2555
LA&SL 2717 LA&SL 3717 Brooks 62873 Feb 1921 1923 OSL 2556
LA&SL 2718 LA&SL 3718 Brooks 62874 Feb 1921 1923 OSL 2557
LA&SL 2719 LA&SL 3719 Brooks 62875 Feb 1921 1923 OSL 2558
LA&SL 2720 LA&SL 3720 Brooks 62876 Feb 1921 1923 OSL 2559
LA&SL 2721 LA&SL 3721 Brooks 62877 Feb 1921 1923 OSL 2560
LA&SL 2722 LA&SL 3722 Brooks 62878 Feb 1921 1923 OSL 2561
LA&SL 2723 LA&SL 3723 Brooks 62879 Feb 1921 1923 OSL 2562
LA&SL 2724 LA&SL 3724 Brooks 62880 Feb 1921 1923 OSL 2563
LA&SL 2725 LA&SL 3725 Brooks 62881 Feb 1921 1923 OSL 2564

Description:

Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches

General Notes:

a. In 1923 LA&SL traded ten 2700 series locomotives in the LA&SL 2716-2725 group to OSL in return for ten OSL 2500 series locomotives in the OSL 2500-2521 group; the ten OSL locomotives were renumbered as LA&SL 2726-2735.
   

LA&SL 2-8-2 -- 7 locomotives

1923 LA&SL
Number
First
Number
Second
Number
Date To
LA&SL
Builder Builder
Number
Date
Built
Date
Vacated
Notes
LA&SL 2726 OSL 1200 OSL 2500 1923 Baldwin 39840 May 1913 Aug 1956 1
LA&SL 2727 OSL 1201 OSL 2501 1923 Baldwin 39841 May 1913 Mar 1948 2
LA&SL 2728 OSL 1202 OSL 2502 1923 Baldwin 39842 May 1913 Aug 1956 3
LA&SL 2729 OSL 1203 OSL 2503 1923 Baldwin 39843 May 1913 May 1948 4
LA&SL 2730 OSL 1205 OSL 2505 1923 Baldwin 39845 May 1913 Apr 1956 5
LA&SL 2731 OSL 1209 OSL 2509 1923 Baldwin 39956 Jun 1913 Mar 1957 6
LA&SL 2732 OSL 1214 OSL 2514 1923 Baldwin 39961 Jun 1913 Dec 1947 7

Description:

CS Class: MK-5
Cabside Class: MK-63
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 51,075 pounds
Weight on Drivers: 214,050 pounds
Weight in Working Order (Engine Only): 286,120 pounds
Weight in Working Order (Engine and Tender): 456,417 pounds
Fuel: Oil

General Notes:

a. LA&SL 2726-2732 were built as OSL 1220-1214 in 1913; renumbered to OSL 2500-2514 in 1915-1916; sold to LA&SL in 1923 and renumbered to LA&SL 2726-2732.
b. In 1923 LA&SL traded ten 2700 series locomotives in the LA&SL 2716-2725 group to OSL in return for ten OSL 2500 series locomotives in the OSL 2500-2521 group; the ten OSL locomotives were renumbered as LA&SL 2726-2735.

Notes:

1. LA&SL 2726 was built as OSL 1200 in 1913; to OSL 2500 in 1915; to LA&SL 2726 in 1923; vacated in 1956
2. LA&SL 2727 was built as OSL 1201 in 1913; to OSL 2501 in 1915; to LA&SL 2727 in 1923; vacated in 1948
3. LA&SL 2728 was built as OSL 1202 in 1913; to OSL 2502 in 1915; to LA&SL 2728 in 1923; vacated in 1956
4. LA&SL 2729 was built as OSL 1203 in 1913; to OSL 2503 in 1915; to LA&SL 2729 in 1923; vacated in 1948
5. LA&SL 2730 was built as OSL 1205 in 1913; to OSL 2505 in 1915; to LA&SL 2730 in 1923; vacated in 1956
6. LA&SL 2731 was built as OSL 1209 in 1913; to OSL 2509 in 1915; to LA&SL 2731 in 1923; vacated in 1957
7. LA&SL 2732 was built as OSL 1214 in 1913; to OSL 2514 in 1915; to LA&SL 2732 in 1923; sold to Six Companies in September 1932 for use in the construction of Boulder Dam; sold back to UP in March 1936; vacated in 1947
   

LA&SL 2-8-2 -- 3 locomotives

1923 LA&SL
Number
First
Number
Date To
LA&SL
Builder Builder
Number
Date
Built
Date
Vacated
LA&SL 2733 OSL 2517 (1st) 1923 Lima 5577 Sep 1917 May 1958
LA&SL 2734 OSL 2518 (1st) 1923 Lima 5578 Sep 1917 Mar 1953
LA&SL 2735 OSL 2521 (1st) 1923 Lima 5581 Sep 1917 Feb 1948

Description:

CS Class: MK-7
Cabside Class: MK-63
Drive Wheel Diameter: 63 inches
Cylinders: 26x28 inches
Maximum Tractive Effort: 51,075 pounds
Weight on Drivers: 214,050 pounds
Weight in Working Order (Engine Only): 286,120 pounds
Weight in Working Order (Engine and Tender): (Varied due to different tender styles)
Fuel: Oil

General Notes:

a. LA&SL 2733-2725 were built as OSL 2517-2521; sold to LA&SL in 1923 and renumbered to LA&SL 2733-2735.
b. In 1923 LA&SL traded ten 2700 series locomotives in the LA&SL 2716-2725 group to OSL in return for ten OSL 2500 series locomotives in the OSL 2500-2521 group; the ten OSL locomotives were renumbered as LA&SL 2726-2735.

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