Journal of an Exploring Tour Beyond the Rocky Mountains; Under the Direction of the A.B.C.F.M., Performed in the Years 1835, '36, and '37 Containing a Description of the Geography, Geology, Climate, and Productions, and the Number, Journal of an Exploring Tour Beyond the Rocky Mountains; Under the Direction of the A.B.C.F.M., Performed in the Years 1835, '36, and '37 Containing a Description of the Geography, Geology, Climate, and Productions, and the Number,