The company was founded October 8, 1919, by Harry Alphonse FitzJohn, and built over 5,000 bus bodies, complete buses, stretchout sedans and passenger-carrying trailers before closing down in May 1958.

FitzJohn's best selling point was the low price relative to its quality, which led to enough success that a new plant was purchased in 1924, five times larger than the original.

However, since so many options (such as rooftop luggage racks or polished aluminum bright-work) were offered, many of the variations were also given Indian names by the company's sales & marketing department.

FitzJohn) was forced out, and went into partnership with Paul O. Dittmar to produce the 12- to 15-passenger Dittmar-FitzJohn Autocoach (similar to the model D, but with a lowered aisle along the right side).

It was based on the Chevrolet Master Sedan which was split in the middle, had an extra body section inserted and a baggage rack added to the roof.

Otherwise-surplus Chevrolet, Pontiac and Packard sedans had extra rows of back-to-back seats installed, but because of wartime restrictions, white ash framing and Masonite panels were used instead of metal.

Starting about 1940, under the direction of James J. St. Croix FitzJohn began to switch from building bodies for other manufacturers' chassis to their own integral models.

The first buses built by FitzJohn Coach of Canada Ltd. were delivered to Hollinger Bus Lines (a suburban Toronto company) in May 1950.