Collection contains 23 folders of newspaper and magazine articles about singer Maria Callas. It also includes 7 folders of concert programs and Dr. Perry's bound scrapbook of Callas clippings.

Collection contains 85 items, including letters to Dr. Perry, autographed programs, and autographed cards. It also includes the collection, Following a Star that consists of mimeographed copies of letters written by May Higgens to members of the Claudia Muzio Fan Club.

Contains 6 cassette recordings of interviews conducted with collector J. Warren Perry and 2 VHS tapes of events in which he was featured.

Collection contains 6 folders of papers related to Perry's association with the Chicago Lyric Opera and 48 folders of clippings he compiled about vocalists, instrumentalists, conductors, and music halls.