| Class | Wheel Arr. |
Dr. Dia. |
Cylinders Dia. x Str. |
Boiler Press. |
Ad. Wt. |
EW WO |
Grate Area |
Evap. Surface |
Sup. Surface |
Remarks |
| A-1 | 0-4-0T | 52in | 16x24in | 140psi | 40t | 40t | 13sq.ft. | 970sq.ft. | none | |
| B-1 | 0-6-0 | 51in | 17x24in | 150psi | 36t | 36t | 14sq.ft. | 1175sq.ft. | none | Or 160psi |
| B-1A | 0-6-0 | 51in | 17x24in | 150psi | 36t | 36t | 14sq.ft. | 1150sq.ft. | none | 145 tubes |
| B-3 | 0-6-0 | 51in | 20x26in | 180psi | 65t | 65t | 36sq.ft. | 1945sq.ft. | none | B&O D-40 |
| B-4 | 0-6-0 | 51in | 20x26in | 180psi | 65t | 65t | 36sq.ft. | 1945sq.ft. | none | B&O D-41 |
| B-8 | 0-6-0 | 51in | 20x26in | 200psi | 65t | 65t | 39sq.ft. | 1725sq.ft. | none | B&O D-42 |
| B-9 | 0-6-0 | 51in | 19x26in | 175psi | 64t | 64t | 30sq.ft. | 1535sq.ft. | none | B&O D-43 |
| B-10 | 0-6-0 | 57in | 20½x28in | 200psi | 76t | 76t | 34sq.ft. | 2085sq.ft. | none | D-39, ex F-3 |
| D-1 | 4-4-0 | 63in | 17x24in | 150psi | 25t | 39t | 17sq.ft. | 1225sq.ft. | none | |
| D-1C | 4-4-0 | 64in | 17x24in | 165psi | 27t | 44t | 17sq.ft. | 1325sq.ft. | none | |
| D-2 | 4-4-0 | 70in | 18x24in | 160psi | 29t | 46t | 17sq.ft. | 1060sq.ft. | none | 156 tubes |
| D-2A | 4-4-0 | 70in | 17x24in | 165psi | 26t | 42t | 17sq.ft. | 1310sq.ft. | none | 204 tubes |
| D-2B | 4-4-0 | 70in | 17x24in | 165psi | 27t | 42t | 17sq.ft. | 1310sq.ft. | none | 204 tubes |
| D-2C | 4-4-0 | 70in | 17x24in | 165psi | 27t | 42t | 17sq.ft. | 1325sq.ft. | none | 205 tubes |
| D-3 | 4-4-0 | 70in | 18x24in | 180psi | 29t | 45t | 19sq.ft. | 1590sq.ft. | none | 245 tubes |
| D-3A | 4-4-0 | 70in | 18x24in | 185psi | 29t | 45t | 19sq.ft. | 1200sq.ft. | none | 192 tubes |
| D-3B | 4-4-0 | 64in | 18x24in | 160psi | 28t | 45t | 17sq.ft. | 1045sq.ft. | none | 156 tubes |
| D-5 | 4-4-0 | 70in | 18x24in | 180psi | 34t | 52t | 19sq.ft. | 1605sq.ft. | none | |
| D-6 | 4-4-0 | 63in | 17x24in | 150psi | 24t | 38t | 17sq.ft. | 1145sq.ft. | none | |
| D-7 | 4-4-0 | 73in | 19x26in | 200psi | 45t | 69t | 32sq.ft. | 2200sq.ft. | none | |
| E-1 | 4-4-2 | 80in | 20x28in | 200psi | 44t | 84t | 54sq.ft. | 2780sq.ft. | none | B&O A-4 |
| E-2 | 4-4-2 | 80in | 20x28in | 200psi | 44t | 84t | 34sq.ft. | 2700sq.ft. | none | B&O A-5 |
| F-3 | 2-6-0 | 57in | 20x28in | 200psi | 62t | 71t | 34sq.ft. | 2155sq.ft. | none | 298 tubes |
| F-3 | 2-6-0 | 57in | 20x28in | 200psi | 69t | 77t | 34sq.ft. | 2085sq.ft. | none | B&O K-18 |
| F-3B | 2-6-0 | 62in | 20x28in | 200psi | 64t | 73t | 34sq.ft. | 2155sq.ft. | none | 298 tubes |
| F-4 | 2-6-0 | 62in | 20x28in | 200psi | 64t | 74t | 48sq.ft. | 2610sq.ft. | none | B&O K-19 |
| F-7 | 2-6-0 | 51in | 21x26in | 190psi | 64t | 73t | 30sq.ft. | 1935sq.ft. | none | B&O K-20 |
| G-1 | 4-6-0 | 64in | 19x26in | 175psi | 51t | 62t | 28sq.ft. | 1815sq.ft. | none | |
| G-1B | 4-6-0 | 64in | 19x24in | 175psi | 51t | 62t | 28sq.ft. | 1815sq.ft. | none | |
| G-1C | 4-6-0 | 64in | 19x24in | 175psi | 51t | 62t | 28sq.ft. | 1725sq.ft. | none | |
| G-1D | 4-6-0 | 64in | 19x26in | 175psi | 51t | 62t | 28sq.ft. | 1725sq.ft. | none | |
| G-2 | 4-6-0 | 64in | 18x24in | 175psi | 49t | 60t | 20sq.ft. | 1720sq.ft. | none | |
| G-3A | 4-6-0 | 73in | 21x28in | 200psi | 62t | 80t | 35sq.ft. | 3480sq.ft. | none | |
| H-1 | 2-8-0 | 57in | 21x32in | 200psi | 77t | 86t | 34sq.ft. | 2870sq.ft. | none | |
| H-1 | 2-8-0 | 57in | 21x32in | 200psi | 77t | 86t | 34sq.ft. | 2225sq.ft. | 490sq.ft. | B&O E-46 |
| H-1A | 2-8-0 | 57in | 21x32in | 200psi | 79t | 89t | 34sq.ft. | 2225sq.ft. | 490sq.ft. | B&O E-46A |
| H-2 | 2-8-0 | 57in | 22x28in | 200psi | 82t | 91t | 54sq.ft. | 3575sq.ft. | none | |
| H-2A | 2-8-0 | 57in | 22x28in | 200psi | 82t | 91t | 54sq.ft. | 2865sq.ft. | 575sq.ft. | B&O E-47 |
| H-3 | 2-8-0 | 57in | 22x30in | 200psi | 83t | 94t | 34sq.ft. | 3250sq.ft. | none | |
| H-3 | 2-8-0 | 57in | 22x30in | 200psi | 83t | 94t | 34sq.ft. | 2670sq.ft. | 575sq.ft. | B&O E-48 |
| H-7 | 2-8-0 | 62in | 22½x30in | 200psi | 92t | 103t | 34sq.ft. | 2850sq.ft. | 580sq.ft. | 230 tubes |
| H-7 | 2-8-0 | 62in | 22½x30in | 200psi | 92t | 103t | 34sq.ft. | 2880sq.ft. | 580sq.ft. | B&O E-49 |
| H-7A | 2-8-0 | 62in | 23x30in | 200psi | 92t | 103t | 34sq.ft. | 3375sq.ft. | none | |
| H-8 | 2-8-0 | 51in | 21x28in | 185psi | 78t | 87t | 54sq.ft. | 2675sq.ft. | none | B&O E-50 |
| I-1 | 4-6-2 | 73in | 22x28in | 220psi | 64t | 99t | 54sq.ft. | 4050sq.ft. | none | |
| I-1 | 4-6-2 | 73in | 22x28in | 220psi | 64t | 99t | 54sq.ft. | 3100sq.ft. | 850sq.ft. | B&O P-10 |
| I-2 | 4-6-2 | 80in | 22x28in | 200psi | 66t | 100t | 54sq.ft. | 3435sq.ft. | none | |
| I-2 | 4-6-2 | 80in | 22x28in | 200psi | 66t | 100t | 54sq.ft. | 3100sq.ft. | 850sq.ft. | B&O P-11 |
| I-3 | 4-6-2 | 77in | 22x28in | 200psi | 64t | 101t | 50sq.ft. | 3050sq.ft. | none | |
| I-3 | 4-6-2 | 77in | 22x28in | 200psi | 64t | 101t | 50sq.ft. | 2845sq.ft. | 850sq.ft. | B&O P-12 |
| I-4 | 4-6-2 | 73in | 23x28in | 200psi | 67t | 110t | 34sq.ft. | 3925sq.ft. | none | |
| I-4 | 4-6-2 | 73in | 23x28in | 200psi | 67t | 110t | 34sq.ft. | 3350sq.ft. | 745sq.ft. | B&O P-13 |
| I-4A | 4-6-2 | 73in | 23x28in | 200psi | 66t | 110t | 50sq.ft. | 3345sq.ft. | 745sq.ft. | B&O P-13A |
| I-5 | 4-6-2 | 80in | 23x28in | 200psi | 68t | 112t | 50sq.ft. | 4070sq.ft. | none | |
| I-5 | 4-6-2 | 80in | 23x28in | 200psi | 68t | 112t | 50sq.ft. | 3345sq.ft. | 745sq.ft. | B&O P-14 |
| I-5A | 4-6-2 | 77in | 23x28in | 200psi | 70t | 112t | 50sq.ft. | 4070sq.ft. | none | |
| I-5A | 4-6-2 | 77in | 23x28in | 200psi | 70t | 112t | 50sq.ft. | 3345sq.ft. | 745sq.ft. | B&O P-15 |
| I-6 | 4-6-2 | 77in | 25x28in | 200psi | 74t | 124t | 70sq.ft. | 3975sq.ft. | 785sq.ft. | B&O P-16 |
| I-6A | 4-6-2 | 77in | 25x28in | 220psi | 74t | 127t | 70sq.ft. | 3975sq.ft. | 785sq.ft. | B&O P-16A |
| K-1 | 2-6-6-2 | 62in | 22/35x30in | 200psi | 129t | 148t | 50sq.ft. | 4205sq.ft. | 745sq.ft. | B&O KK-3 |
| L-1 | 2-8-2 | 62in | 28x30in | 170psi | 96t | 131t | 50sq.ft. | 3525sq.ft. | 700sq.ft. | B&O Q-5 |
| L-1A | 2-8-2 | 62in | 28x30in | 170psi | 96t | 131t | 50sq.ft. | 3545sq.ft. | 745sq.ft. | B&O Q-5A |
| L-2 | 2-8-2 | 63in | 26x28in | 200psi | 99t | 128t | 70sq.ft. | 4220sq.ft. | 865sq.ft. | B&O Q-6 |
| L-3 | 2-8-2 | 63in | 26x28in | 200psi | 101t | 129t | 70sq.ft. | 4215sq.ft. | 910sq.ft. | B&O Q-7 |
| L-4 | 2-8-2 | 63in | 26½x30in | 200psi | 100t | 132t | 67sq.ft. | 3775sq.ft. | 880sq.ft. | B&O Q-8 |
| L-4A | 2-8-2 | 63in | 26½x30in | 200psi | 102t | 135t | 67sq.ft. | 3775sq.ft. | 880sq.ft. | B&O Q-8A |
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