Accessory Catalogs (32 and 24 pages) and one likely reprint (the black-and-white one). They're undated but seems to be from the 1950s.
Vintage Louis Marx & Company Caution High Speed Trains Signal - For Parts
Vintage Louis Marx Semaphore Stop & Go Signal
Vintage Louis Marx & Company Twin Street Lamp Post #408 Untested - For Parts
LOUIS MARX & CO. TOY TRANSFORMER..CAT. No. 319..30 WATTS, 115 VOLTS AC..UNTESTED
Louis Marx 1952 Accessory catalog. O gauge train accessories good condition
Vintage St. Louis Car General Steel Industries Pin Pinback Badge