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.

Incoming and outgoing correspondence and notes. Decanted from larger binder. Arranged in reverse chronological order from 15 March 1962 to2 March 1966.

Incoming and outgoing correspondence, accounts and notes relating to the Animal Husbandry Student Research Laboratory and Animal Breeding Centre at Moggill Farm (now Pinjara Hills). Decanted from larger binder into two folders.

Correspondence relating to biography of Walter Burley Griffin, dating from 1962 to 1965.