Rings - geological formation near McGregor Bay
University of Toronto Archives
n.d.
heritageutarms:6920 2009-76-1MS
A1974-0027/001P (01)
University of Toronto. Department of Astronomy
Reverse reads: W.N. Miller, Sherbrooke St. Peterborough 10th east of Little Current on McGregor Bay annual report G. Surv. Ca. Vol.9 1896, Maps 570, 605