Here's another one of those uncatalogued American Flyer sets from the 1930's. The set box number is 376X. The cataloged set (and this listed only in the 1931 dealers price list) that is the closest match is the #909 Express Electric set.
Set #909 - Express Electric - Illustrated in the Dealer supplement for 1931
Set #376X
The difference between the two is the engine heading the set. #909 has AF #1090 which looks identical to #1097 but, carries the number 1090 and instead of the words "American Flyer" on the emblem in the upper center of the cab side has "Empire Express".