Notes to accompany a preliminary map of the Duck and Riding Mountains in north-western Manitoba
Tyrrell, Joseph Burr, 1858-1957
16 p., 2 leaves of plates (1 fold.) : ill., map ; 25 x 17 cm.
"Published as Geological and Natural History Survey of Canada, Annual Report, Part E, 1887."
Geological Survey of Canada
Riding Mountain (Man.)
Duck Mountain (Man.)