Drawings of residential and commercial buildings in Brisbane and regional Queensland. Collection includes drawings by Atkinson and Conrad, Atkinson, Powell and Conrad, and Atkinson and McLay, together with plans by other architects, including George Brockwell Gill, C. W. Chambers and Lange Powell.

This Karl Langer collection contains architectural drawings, financial records, correspondence, biographical and personal notes, articles, speeches, job photos, subject files, diaries, journal and newspaper cuttings relating to the works, life and interests of Karl Langer. Buildings where Karl Langer was the architect are represented in this collection. Drawings and files include those realting to: St. Peters Lutheran College, Brisbane; Ipswich Girls Grammar School; Ipswich Boys Grammar School; Lennons Hotel, Brisbane and Lennons Hotel, Broadbeach. Karl Langer taught at the University of Queensland and Queensland University of Technology and there are related documents to this time. Plans and photographs of the Langer House, designed by Karl Langer are included in the collection. The Langer House was added to the Queensland Heritage Register on 21 October 1992.