Negatives of the map are held in Archivist's Office. N. Wearing wrote in 2016: Some time between 1956 and 1958, Miss Mercer archivist of the Middlesex Record Office arranged for Richard Binfield's Map and survey book covering the parish of Gt. Greenford ... to be copied. I believe four or five copies photographic were made. One I know was kept by Ealing reference library another by John Petingale ... [a]nother would have been held with the church records. Around 1974...[I] was able to borrow one of these copies and then trace it.