A slightly complicated history.
The Elec-Traction Streetcar was marketed by General Models Corporation (GMC) of Chicago in 1950. The axle is the motor armature and the model requires a push to start running. GMC also sold a MAC Handcar.
All Nation became the owner of GMC, after GMC ceased trading.
After the bankrupcy of GMC, the streetcar was offered in 1951 as a kit by Kroll Kar Co of Chicago with the same push start motor as the GMC model.
The 1952 EMCO (Edward Miller Co. New York) model lettered Dinkyville has a conventional self starting motor, with a companion model, the two man pump handcar. Both models were availble for O and S gauge track.
The 1955 HICO (Hetherington, Inc, Sharon Hill, PA.) model lettered Dinkyville was identical including the box with only the name changed. Handcar and Trolley models for O and S Gauge.
My thanks to eBayer LLove for the above information.
(a) The EMCO Trolley
 
EMCO Dinkyville Trolley. Two examples known with red body and yellow roof  | 
 
EMCO Dinkyville Trolley. Two examples known with red body and yellow roof  | 
 
EMCO Dinkyville Trolley. Two examples known with red body and yellow roof  | 
(b) The HICO Trolley
 
HICO Dinkyville Trolley  | 
 
HICO Dinkyville Trolley  | 
 
HICO Dinkyville Trolley  | 
 
HICO Dinkyville Trolley  | 
(c) The EMCO Handcar
 
EMCO Dinkyville & Western Railroad Handcar (yellow car, blue figures)  | 
 
EMCO Dinkyville & Western Railroad Handcar (yellow car, blue figures)  | 
 
EMCO Dinkyville & Western Railroad Handcar (yellow car, blue figures)  | 
 
EMCO Dinkyville & Western Railroad Handcar (yellow car, blue figures)  | 
 
EMCO Dinkyville Railroad Handcar (blue car, yellow figures)  | 
 
EMCO Dinkyville Railroad Handcar (blue car, yellow figures)  | 
 
EMCO Dinkyville Railroad Handcar (blue car, yellow figures)  | 
 
EMCO Dinkyville Railroad Handcar (blue car, yellow figures)  | 
 
EMCO Dinkyville Railroad Handcar. Possibly late production, with single pickup strip?  | 
(d) The HICO Handcar
 
HICO Dinkyville Railroad Handcar  | 
 
HICO Dinkyville Railroad Handcar  | 
 
HICO Dinkyville Railroad Handcar  | 
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