Allen C. Tanner (1898-1987) was an Illinois-born pianist. At fifteen he was awarded a scholarship to study music in Chicago where he met Margaret Anderson, founder of the Little Review. Tanner then moved to New York City where he performed in musical salons and accompanied many musical greats of the era. In 1922, Tanner left for Berlin, where he met Russian artist Pavel Tchelitchew and the two men became lovers. In 1924 the pair moved to Paris to pursue their artistic careers, and became great friends with Gertrude Stein and Edith Sitwell. When Tanner and Tchelitchew ended their relationship in 1934, Tanner returned to the United States. In 1967 he released the album Allen Tanner Plays Bach, Debussy, Scriabin, Granados, Rachmaninoff, Liszt, and Steinert.

The collection contains correspondence, writings, programs and publicity, news clippings, financial documents, sheet music, sound recordings, photographs, and books. Some of that material has been digitized and is available below. For more information about Tanner and the entire collection, please see this post and the collection inventory.