R F Giardina - Manufacturer of Gilbert American Flyer trains, parts and supplies. Includes a repair service, and steam engine specs.
Train Collector - Buys and sells toy trains of all types, specializing in American Flyer S gauge trains.
Trainrefs.com - Reference manuals for A.C Gilbert trains.
Trains and More - American Flyer trains, parts and accessories, Gilbert toys and memorabilia.
Triple S Supplies - Extensive listings of parts for American Flyer, organized by original part numbers that A.C. Gilbert used. There are many exploded views of accessories, cars, and engines of O, S, and HO gauge.
