Papers of Patrick Horsbrugh representing his whole life and career, consisting of extensive office files, environics files, and research files, correspondence, diaries, architectural drawings, artwork such as paintings and drawings, and his Italian thesis; consisting of files labelled PH (Patrick Horsbrugh): a chronological series representing his projects; Churchill Memorial files; correspondence files; environics files; files on individuals and locations associated with environics; diaries 1954-2012; back office files, including High Paddington, Edward Blore, and drop files representing his interest in alternative power sources and transportation; loose letters, including family correspondence; binders of professional correspondence by project; syllabi for Horsburgh classes and theses directed by Horsbrugh.

Also binders of slides used by Horsbrugh in the classroom and on the lecture circuit; one folder of slides in sleeves and one stack of oversize exhibit boards with photographs mounted on them; two albums of Horsbrugh cards and sketches (5"); three boxes of oversized architectural documents and posters, some concerning High Paddington, along with even larger stacks of such documents; video tapes of architecture students and architects; many VHS video tapes; films, some regarding New Barbican; many reel-to-reel audio tapes of "Cities in Context"; cassette audio tapes of "Plants in Urban Well-Being"; and some 200 cassette tapes with recordings of Horsbrugh lectures from 1975 and a series of 21st-century interviews of Horsbrugh conducted by the donor, Clifford Peterson.