Records related to the planning and construction of the Baltimore City and County Courthouse and Records Office. Included is correspondence from Robert Cary Long, Jr., Robert Mills, and William Strickland concerning the architectural design of the buildings. There is also correspondence of Solomon Etting, President of the Baltimore Court House Commissioners; bank books and daily memos; proposals for brick and lumber supply, painting, glass, iron and stone work, and other labor costs and contracts; payroll records and receipts; contractors' bonds; and recommendations for employment. These records are individually listed in the HRS indexes.

There are related mateials in the records of the City Council, RG.16, City Register, RG.32; City Commissioners, RG.3; and Mayor's Office, RG.9. The Maryland Historical Society also has minutes of the commission, apparently maintained by Solomon Etting, in the Baltimore Court House Commissioners' Minutes, MS.69.