Charles Allerton Coolidge (1858–1936) was an American architect best known as a partner in the architecture firm of Shepley, Rutan & Coolidge of Boston and Chicago, successors to the firm of architect Henry Hobson Richardson and one of the best-known architecture firms in the United States. Coolidge was also senior partner in that firm's successors, Coolidge & Shattuck and Coolidge, Shepley, Bulfinch & Abbott of Boston and Coolidge & Hodgdon of Chicago.
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