an October 1935 issue of G-Men (vol. 1, no. 1)Greenwich Village (ca. 1922), which assembles pieces from Chaplin's The Rounders (1914) and another Chaplin film to create a new film
original instrumental sheet music for Scott Joplin's "Maple Leaf Rag" (1899)
an original Broadway cast recording of 42nd Street (1980)
Further details about the finds here.