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.

Architectural plan, ink line drawing on tracing paper. Drawing for lower ground floor with electrical details and furniture number, with pencil annotations. No title block, no job/drawing number, no date.

Architectural plan, ink line drawing on tracing paper. Title block: Alterations and additions to Main Library, 1st & 5th floors; University Architect is J.P. Birrell; job number is A2/46A; dated Aug 1965. It includes deletions and additions to flirst floor and additions to fifth floor.