Founded in 1970 by Florence and George Theriault, the firm has specialized exclusively in the appraisal and auction of antique dolls and childhood playthings throughout its 48-year history. The firm's offices and cataloging center are headquartered in Annapolis, Maryland, although its live auctions are conducted in major cities throughout the United States.

Theriault's is founded on traditional values, among which is the belief that a business must return value to the community that supports it. To that end, Theriault's has been a leader in education of doll collectors. "It's our abiding belief that the best collectors are educated collectors," says Florence Theriault.