the 254/254e would go with any of the brass plate latch coupler cars.
Specific sets were
Set 299/299e with olive green 254(e), 813, 814, and 817 in 1926-28
Set 299/299e with olive or pea green 254(e), 812, 813, 814 and 817 in 1929
Set 295/295e with pea green 254(e), 811, 812, and 817 in 1930
Set 183/183e with pea green 254(e), 812, 820, and 817 in 1932.
Set 247E with olive or pea green 254e, 820, 812, 816, and 817 in 1933/34