The construction of Stage IV commenced in December 1969 and was completed inJune 1972. This volume comprises 10 drawings and a general notes page. It was previously held together metal staples. From cover page creators are James Birrell & Partners (Architect) and Antony Tod & Partners (Consulting Structural Engineer). All drawings are dated October 1969. The General notes page is undated November 1960. General notes page and drawings have the drawing no. number 3093, followed by a running sheet number from 1 to 11.

The construction of Stage III commenced in July 1967 and was completed in June 1968. This volume comprises 13 drawings and a general notes page. It was previously held together metal staples. From cover page creators are James Birrell & Partners (Architect) and Antony Tod & Partners (Consulting Structural Engineer). All drawings are dated June 1967. General notes page and all drawings have the drawing no. number 2221, followed by a running sheet number from 1 to 14.

Architectural plan, ink line drawing on butter paper, wtih Proposed alterations to entrance to Main Library. Title block has: University architect J.P. Birrell; Job number A2/21; and dated June 1962.

Architectural plan, ink line drawing on butter paper, with cross section and elevation of Main Library. Title block has: job title of Extension to Main Library; University architect J.P. Birrell; no job number; and undated.

Architectural plan, ink line drawing on tracing paper, of the fifth floor of Main Library (now level 7 of Duhig Building). Title block has: job title of Alterations and Additions to Main Library; Interior architect J.P. Birrell; no job number; and undated.

Architectural plan, ink line drawing on tracing paper, of the fourth floor of Main Library (now level 6 of Duhig Building). Title block has: job title of Alterations and Additions to Main Library; Interior architect J.P. Birrell; no job number; and undated.

Architectural plan, ink line drawing on tracing paper, of the third floor of Main Library (now level 5 of Duhig Building). Title block has: job title of Alterations and Additions to Main Library; Interior architect J.P. Birrell; no job number; and undated.

Architectural plan, ink line drawing on tracing paper, of the second floor of Main Library (now level 4 of Duhig Building). Title block has: job title of Alterations and Additions to Main Library; Interior architect J.P. Birrell; no job number; and undated.

Architectural plan, ink line drawing on tracing paper, of the first floor of Main Library (now level 3 of Duhig Building). Title block has: job title of Alterations and Additions to Main Library; Interior architect J.P. Birrell; no job number; and undated.

Architectural plan, ink line drawing on tracing paper, of the ground floor of Main Library (now level 2 of Duhig Building). Title block has: job title of Alterations and Additions to Main Library; Interior architect J.P. Birrell; no job number; and undated.