The photographic materials document the pictorial history of Emilie Mulholland's experiences working for the Philadelphia Athletics and the Pittsburg Pirates. The materials date from circa 1890 to 1976 with the bulk of the materials dating from 1946 to 1967. The collection includes photographs of the Milwaukee Braves, Boston Braves, Cleveland Indians, Philadelphia Athletics, Philadelphia Phillies, Pittsburgh Pirates, and San Francisco Giants. Materials include photos of teams, groups, and individual players, both in and out of uniform. Photos include players, managers, and other team personnel. There are personal photos, taken by Mulholland, as well as promotional and news media photographs. The collection includes prints, notebook, and a scrapbook.

The manuscript materials include Mulholland's resume just prior to graduating from Temple University. As well as responses from potential employers. There is personal and professional correspondence, and information relating to the "Kellner's Kolleague Fan Club". There a multiple notebooks and scorebooks for games between 1948 and 1964, as well as game tickets. The scorebooks dated from 1955 to 1964 were scored by Mulholland as the Pirates publicity director. A large scrapbook includes clippings, tickets, correspondence, and various ephemera items kept by Mulholland.