An account of Arctic discovery on the Northern shore of America in the summer of 1838 ... /
Dease, Peter Warren.
Simpson, Thomas,of the Hudson's Bay Company.
Pelly, I. H.
[London, 
1839]
Joint authors: Peter Warren Dease and Thomas Simpson, of the Hudson's Bay Company.
Pp. 325-330 of the journal of the Royal Geographical Society, vol. 9, article 15.