Note 12 — Chapter I · Why I went to Great Salt Lake City.—The various Routes.—The Line of Country traversed.—Diaries and Disquisitions.
Reading edition
St. Louis (Mo.) lies in N. lat. 28° 37′ and W. long. (G.) 90° 16′: its elevation above tide water is 461 feet: the latest frost is in the first week of March, the earliest is in the middle of November, giving some 115 days of cold. St. Joseph (Mo.) lies about N. lat. 39° 40′, and W. long. (G.) 34° 54′.