There are two architectural drawings, ink on paper, with the title The Union which may form part of the pilot plans for an extension to The Union Building which Birrell designed in 1962. There are 14 drawings for the Master Planning Report upon the Student Union Precinct University of Queensland, which was produced by Birrell and assistant architect Richard Stringer. This report was submitted to the Buildings and Grounds Committee in March 1966. 12 of these 14 drawings have the University of Queensland title block with J.P. Birrell as University Architect. Included with these drawings, which form part of the master plan for the precinct, are several designs for a Union Theatre. There are two pencil drawings related to the Union Theatre, without title, date, or creators. All plans are undated.

William McArthur Mayo (Bill) and Eliza Mary (Lila), née Saxelby corresponded frequently with their daughter Daphne. Sometimes both parents would write individual letters to Daphne on the same day, at other times they would each write in the same letter, and they would also write to her individually. There are approximately 1422 items of correspondence in this subseries dating from 1919 to 1959. Bill would often write about financial matters including Daphne's rental property in Brisbane. Occasionally Lilia would get the date wrong and, if discernible, this date has been corrected in pencil on the letter. As Lila's health deteriorated, her handwritten became more difficult to read.

Over 1220 letters, postcards, cards, lettercards and telegrams from friends and family (other than Daphne Mayo's parents). Correspondents include: Lloyd Rees, some with or by his wife, Majorie Rees; Vida Lahey; Edith Lahey; Dr Christine Rivett; Walter Taylor; Nell Mary Lette Hubble; Mim Shaw; and Ina Rivers.

Correspondence and notes relating to requests for commissioned and uncommissioned works; and material relating to her studios, especially the one in Sydney.

Includes Constitution, Membership lists, History of the Society, Annual reports, Purchases for the QAG, Minutes, 1964 - 1981, Correspondence, 1960s and 1970s, Catalogues, 1959 - 1979, Newsletters