The most significant collection at Gunnersbury Museum Archives are the records of its own activities. These chart the whole history of the Park and Museum, from when it was purchased from the Rothschild family and came into public ownership in 1925, to the opening of the Museum in 1929 and into the present day. Earliest papers relate to its joint management by the Gunnersbury Park Joint Committee [GPJC] which still exists, but does not have the same operational control as in pre-War years. Today the Park and Museum are operated as a Community Investment Company, Gunnersbury Estate (2026) CIC, under joint ownership of Ealing and Hounslow Councils.
An extensive local studies collection has grown and includes:
Posters of Ealing Studios
Photographs of Ealing Studios' photographer, Roy Gough
Historic map collection of Middlesex
Records of local business eg Ealing Hygienic Laundry
Records of local families eg the Buckmasters
Historic photographs for the surrounding area
Exhibition photographs including the Dennis Morris exhibition, Southall - A Home from Home
Ealing Anti Apartheid Society
Ephemera including diaries, theatre programmes, building plans