Buildering actually started in the 1890s, and Cambridge (and Oxford to some extent) developed a sophisticated subculture that flourished in the 1920s and 30s. After Geoffrey Winthrop Young, the noted English writer and mountaineer, published The Roof Climbers Guide to Trinity in 1899, a succession of Cambridge buildering references followed: Wall and Roof Climbing (1905), Climbing in Cambridge: An essay and some incidents (1921), articles in the Alpine Sports in Cambridge (1924) and A Novel Climb in Cambridge (1926). The holy grail of buildering references is the highly influential and much revered The Night Climbers of Cambridge, published in 1937 under the pseudonym 'Whipplesnaith,' which detailed, along with diagrams and photographs, the classic routes on campus: King's College, St John's College and The Senate Leap.