The personal papers of Gertrude Langer (1908 – 1984) include diaries, correspondence, photographs, manuscripts and typescripts, notebooks and ephemera, including exhibition catalogues. The papers cover the period 1917 – 1984 including correspondence received between 1918 and 1984. The material from before 1938 includes papers relating to her Art History studies in Vienna and Paris as well as photographs taken during her travels in Europe. From 1929 onwards the papers include correspondence to and from her future husband Karl Langer (married in 1932), as well as photographs of their travels together. Correspondence and records from 1938 and early 1939 document the Langers’ escape from German-annexed Austria. Material after 1939 documents Gertrude Langer’s activities as a private art history educator and as an art critic in Brisbane. This material includes her lecture notes, lists of students attending the classes, printed ephemera, manuscripts and typescripts of her art reviews for the Courier Mail newspaper, as well as annotated exhibition catalogues. The papers also contain Arts Council of Australia and Queensland Art Gallery Society records, as well as material created by her husband Karl Langer. This includes correspondence received by him between 1922 and 1969, staff cards from his architectural firm (1950s), ephemera as well as sketch plans and architectural drawings for the Langers’ residence in St Lucia (1950).

Correspondence and documents relating to UQ School of Architecture curriculum, research on Karl Langer and architectural conservation.

This collection is comprised three series. There is material associated with or acquired during the finalising of the estate of Gertrude Langer, which John Riedel assisted with. It includes a 1939 diary from Gertrude Langer, correspondence relating to the Langer's, eulogies and notes about Gertrude Langer, a copy of her will, newspaper cuttings, and photographs.

The second series contains papers and correspondence associated with John Riedel and the Langer Memorial Committee.

The final series is comprised of three photographs of Kathleen Campbell Brown, and some newspaper cuttings relating to her.