Scope and Contents The papers of Henry T. Ewald, co-founder (1911, with Frank Campbell) of Campbell-Ewald Company, Inc. a Detroit, Michigan Advertising Agency. Upon Campbell's retirement in 1917, Ewald became President and Chairman of the Board, serving as such until his death in 1953. Under Ewald's leadership, the agency expanded, setting up branches in New York, Los Angeles, Chicago, Dallas and other cities, and had as clients such companies as General Motors, Burroughs Corporations, Detroit...