3 files, each one originally held in a folder and collected by Percy Johnson-Marshall. They consist of:

London County Council's "Architect's Department: Housing Division Information Book" (1): Information notices concerning the professional conduct of staff including: planning standards, organisation and procedure, information sheets, standards drawings, sources of housing information and current information notes.

London County Council's "Architect's Department: Housing Division Information Book" (2). Detailed, indexed set of legal and in-house requirements for buildings design

"Notifications and observations": detailed information concerning legal requirements for buildings design