Will Whittaker Photo

The Santa Fe had one of the largest blocks of Modified 1937 AAR Box Cars, with close to 7,000 cars between the Bx-34 and Bx-37 classes. The Bx-34 class was the last group of Santa Fe box cars to receive the Duryea underframe. The details of these cars are in the table below.

Class	Builder	Date	Series Start	Series End	No. of Cars	Trucks	Notes
Bx-34	P-S	1940	139500	140749	1250	Cast Steel, Double Truss	Duryea Underframe
Bx-34	P-S	1940	140750	141299	1550	National B-1	Duryea Underframe
Bx-34	P-S	1940	141300	141300	1	Cast Steel, Double Truss	Duryea Underframe
Bx-37	P-S	1941	141301	142300	1000	National B-1
Bx-37	P-S	1941	142301	142910	610	Cast Steel, Spring Plankless
Bx-37	P-S	1941	142911	143310	400	Barber S-2
Bx-37	P-S	1941	143311	143810	500	National B-1
Bx-37	P-S	1941	143811	144310	500	Cast Steel, Spring Plankless
Bx-37	P-S	1942	145500	146499	1000	National B-1
Bx-37	P-S	1942	146500	147499	1000	Cast Steel, Spring Plankless