The Maryland automobile was built by the Sinclair-Scott Company of Baltimore, Maryland, between 1907 and 1910.Georgano, Nick, The Beaulieu Encyclopedia of the Automobile, 2000, p. 1792

History Sinclair-Scott was a maker of food canning machinery and in the early 1900s started to make car parts. One of their customers, Ariel, failed to pay and in recompense Sinclair-Scott took over production, moved the factory to Baltimore, and marketed the car as the Maryland.

The car was powered by a 30-hpGeorgano, G. N., Encyclopedia of American Automobiles, 1971, p. 21: "Ariel" four-cylinder, overhead camshaft engine. The Ariel design was initially unchanged, and the Maryland was originally available as a four-seat roadster or a five-seat touring car. The wheelbase was later lengthened from the initial to . Limousines became available in 1908 and town cars in 1909.Georgano, G. N., Encyclopedia of American Automobiles, 1971, p. 126: "Maryland (ii)" Prices ranged from $2,500 to $3,200, ().Kimes, Beverly Rae, The Standard Catalog of American Cars: 1805-1942, 1996, p.1612

Production stopped in 1910 after 871 Marylands had been made, as producing the cars was not profitable. The company returned to the manufacture of food-canning machinery.

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