Narrative of the progress of Arctic discovery on the Northern shore of America, in the summer of 1839, etc. [With a map.]
Dease, Peter Warren.
Simpson, Thomas,of the Hudson's Bay Company.
London, 
1840.
Joint authors: Peter Warren Dease and Thomas Simpson, of the Hudson's Bay Company.
Pp. 268-274 of the journal of the Royal Geographical Society, vol. 10, pt. 2, 1840.