Geological and Natural History Survey of Canada
Alfred R. C. Selwyn, C.M.G, LLD F.R.S, Director
Map
showing wooded and prairie tracts etc.
in part of
Northern Alberta
and portions of the Districts of
Assiniboia and Saskatchewan,
North West Territory
by
J. B. Tyrrell, B.A., F.G.S.
1887

Joseph Burr Tyrrell [1858–1957] was a Canadian geologist, cartographer, mining consultant and historian. He discovered dinosaur bones in Alberta’s Badlands and coal around Drumheller in 1884.

Map number 36 in Vooris [1].