George Hamlin (1868-1923) was an American tenor. His daughter, Anna (1900-1988), was a soprano and voice instructor. The George and Anna Hamlin papers, dating from 1868 to 1983, document the careers of both vocalists through clippings, diaries, autograph books, programs, publicity materials, scores, photographs, and correspondence.

These records document the history of the New York Chamber of Commerce and Industry, beginning with its establishment in 1768. Tracking the wax and wane of the organization's influence over the next two centuries, the collection provides a first hand account of the Chamber's many contributions to New York City and State business and development. These records exist in a wide variety of formats, such as bulletins, correspondence, minute books, and printed materials.