The London County Council had its own Press Bureau at County Hall on London's South Bank, which produced and distributed Press Releases announcing significant events or decisions. Percy Johnson-Marshall collected press releases which related to the work of the Architect's Department - architecture, housing or city planning.

Further public relations for the Architect's Department were achieved through publication of articles concerning their work in professional journals and newspapers. Percy Johnson-Marshall kept a file of these, and may have been the author of some of them.