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The Mason Regulator Company produced this trade catalogue in 1902.

This advertisement illustrates the Mason Regulator Company's new Model C engine. It appeared on page 42 of Motor Age for October 1903.


On September 8, 1905, the Mason Regulator Company sent the Grosvenor Dale Company this business reply postcard.

On January 3, 1903, the Mason Regulator Company placed this advertisement in The Automobile. Other steam car advertisers were the Mobile Company of America, the Century Motor Vehicle Company, the Stearns Steam Carriage Company, and the Johns-Manville Company (asbestos for boilers). John A. Conde Collection Photocopy.
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