Article to accompany these photos.

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Text photo captions from left to right, top to bottom

The dome skeleton under construction in England in August 1932 (from the University of Toronto Archives).

The University of Toronto's 61-foot circular Observatory building under construction in England in April 1933, showing the doors and external staircase (from the University of Toronto Archives).

The laying of the cornerstone for the David Dunlap Observatory, September 10, 1932. From left to right are: a stonemason, University President H.J. Cody and Moffat Dunlap (reproduced with permission from the Helen Sawyer Hogg Collection).

The 16-ton polar axis assembly is hoisted into the finished dome, October 23, 1933 (reproduced with permission from the Helen Sawyer Hogg Collection).

The 74-inch telescope is mounted in the shop of Sir Howard Grubb, Parsons and Company, Newcastle-Upon-Tyne (reproduced with permission from the Helen Sawyer Hogg Collection).

Grinding the surface of the 74-inch mirror, December 1933 (reproduced with permission from the Helen Sawyer Hogg Collection).