The collection contains offprints of articles by Otto Kinkeldey and others, correspondence, documents related to the Committee on Graduate Study in Music (1938), Kinkeldey's transcriptions of musical works, and one of his own compositions.

This is the largest collection of Ferdinand Praeger's manuscripts in the world, consisting of approximately 480 works. The majority of the works are for piano, but the collection also includes chamber music for strings, large ensemble works, vocal works, and sketches. The dated works range from 1829-1891, but many works are undated.