Records from the Philadelphia Phillies organization primarily cover the tenure of team president and owner Robert Ruliph Morgan Carpenter, Jr. (1915-1990) and his son, Robert Ruliph Morgan Carpenter, III (1940-), who succeeded his father as team president in 1972. Included are financial records, scouting reports, draft lists, public relations files, and correspondence about player development and stadium leases, mostly from the period between 1950 and 1970. Also included are records from the National League and Major League Baseball in general, primarily dating from the same era.

A small volume of correspondence between the Phillies organization and other teams throughout the Major Leagues highlight successful promotional events implemented throughout the season. There are also studies and proposals for the construction of a new multi-purpose sports stadium in Camden County, New Jersey, as well as concession contracts and some information regarding labor negotiations between food vendors and concession workers. There is also substantial material on television and radio broadcasting agreements and licensing, as well as the Department of Justice’s 1960 investigation into baseball broadcasting rights. Additionally, there are two stock ledgers and a stock certificate book dating back to the Philadelphia Ball Company, predecessor to the Phillies organization, and a 1930s cash book that lists salaries paid to members of the Phillies organization and to its players.

Papers from the National League National are less substantial but documents executive decision making through the minutes of league meetings (1958-1968) and president and treasurer's reports (1946-1970). Also included are copies of the league constitution, and records relating to expansion, franchise shifts, broadcasting, and owner-player negotiations.

Records from the Major League include files on the pension fund and benefit plan, materials relating to the Curt Flood case which challenged the free agent clause, and statements relating to the antitrust exemptions. Also included are minutes of the Joint Meetings of the Major Leagues (1961-1970), and files on the Major League Agreement (1952).