ALCo S2-S4 series

model	builder	build	gauge			career
S2	ALCo	1940−1950 (1502)	1435		DE	ACJ S2 AMTK S2 NYSW S2 PTRC S2 SFBR S2 USSX S2
S4	ALCo	1949−1961 (797)	1435		DE	ATSF S4 B&O S4 CP S4 TMBL S4

model	builder	build	gauge			career
S2	ALCo	1940−1950 (1502)	1435		DE	ACJ S2 AMTK S2 NYSW S2 PTRC S2 SFBR S2 USSX S2
S4	ALCo	1949−1961 (797)	1435		DE	ATSF S4 B&O S4 CP S4 TMBL S4