Series 3. Docket Maps, 1869-1949, bulk 1911-1941

Series 1. Record Books, 1911-1946, include Commission decisions, findings, and orders issued in response to petitions, applications, and appeals made by corporations, municipalities, and individuals. The record books for steam railroads and street railways also include permissions to run special trains and statements of inspection.

Series 2. Annual Reports from Companies, 1911-1949, contain information on but not limited to the following: the organization, directors and officers, stockholding, areas of operation, finances, freight moved, equipment owned.

Series 3. Docket Maps, 1869-1949, bulk 1911-1941, are of projected rights of way and changes to established lines, grade-crossing elimination plans, blueprints for stations and bridges, both for railroads and street railways.

Series 4. Special Commission for the Investigation of Problems Relating to the Street Railways, 1918-1919, include two volumes of hearing transcripts and exhibits.

Series 5. Dockets, 1911-1988, has three subseries: rail, bus and taxicab livery, and index cards. Rail dockets include applications and petitions along with findings and orders, as well as accident investigation reports. Bus and taxicab livery dockets contain primarily applications and decisions concerning routes and fares. Some of the bus and livery dockets date to the time of the Public Utilities Commission's successor agency, the Public Utilities Control Authority. The index cards provide an access point to both the rail and the bus and taxicab livery dockets.

Series 6. Daily Log Books, 1948-1976, is comprised of 35 volumes that record hearings held and documents issued.

Series 7. Miscellaneous records, 1911-1924, is comprised primarily of correspondence, petitions, and receipts.