General administrative files of the bicameral city council. Indexed during the 1930s by the Works Progress Administration, Historical Records Survey, the records include petitions, memorials, applications for city appointments, general correspondence, correspondence with municipal departments, committee reports, ordinances and resolutions, messages between the two branches, communications to and from the Mayor, and council proceedings.

There is a separate HRS item index. After 1923 the administrative files were maintained in their original filing system and these records constitute Series 4 in this record group.