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Steam Locomotive Classifications

CLASS SYMBOL #SERIES TYPE Model BUILDER #UNITS TE/w BOOSTER WGHT
1 C-43 1-20 2-8-0 Consolidation Baldwin 20 43,000 364,000
21 C-43 21-65 2-8-0 Consolidation American 45 43,000 358,000
71 TP-29 71-85 4-6-0 Ten Wheeler American 15 29,000 319,000
86 TP-29 86-106 4-6-0 Ten Wheeler American 21 29,000 317,000
121 TF-17 121-122 4-6-0 Ten Wheeler Richmond 2 17,000 191,000
123 EF-14 123 2-6-0 Mogul Baldwin 1 14,000 150,000
124 C-23 124 2-8-0 Consolidation Baldwin 1 23,000 178,000
125 TF-21 125 4-6-0 Ten Wheeler Pittsburgh 1 21,000 161,000
126 TF-18 126 4-6-0 Ten Wheeler New York 1 18,000 198,000
126 TF-19 127 4-6-0 Ten Wheeler New York 1 19,000 198,000
151 S-31 151-162 0-6-0 6-Coupled American 12 31,000 268,000
163 S-34 163 0-6-0 6-Coupled American 1 34,000 263,000
163 S-34 164-166 0-6-0 6-Coupled American 3 34,000 263,000
171 MT-44 171-180 4-8-2 Mountain American 10 44,000 516,000
201 M-80 201-205 2-6-6-2 Little Mallet American 5 80,000 642,000
206 M-80 206-210 2-6-6-2 Little Mallet American 5 80,000 637,000
251 M-137 251-256 2-8-8-2 Big Mallet Baldwin 6 137,000/151,000 1,073,000
257 M-137 257-260 2-8-8-2 Big Mallet Bldwin 4 137,000/151,000 1,066,000
301 MK-60 301-305 2-8-2 Mikado American 5 60,000 553,000
306 MK-60 306-310 2-8-2 Mikado American 5 60,000 531,000
311 MK-60 311-315 2-8-2 Mikado American 5 60,000 538,000
316 MK-60 316-321 2-8-2 Mikado American 6 60,000 506,000
322 MK-60 322-326 2-8-2 Mikado American 5 60,000/71,000 519,000
327 MK-60 327-331 2-8-2 Mikado American 5 60,000/71,000 594,000
332 MK-60 332-336 2-8-2 Mikado American 5 60,000/71,000 599,000
401 M-100 401-407 4-6-6-4 Challenger American 7 100,000 992,000
481 GS-64 481-486 4-8-4 Northern Lima 6 64,000/76,000 864,000
321 MK-55 1st 321-325 2-8-2 Mikado Baldwin 5 55,000 463,000

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