Account Of An Expedition From Pittsburgh To The Rocky Mountains, Performed In The Years 1819, 1820 . Under The Command Of Maj. S.H. Long, Of The U.S. Top. Engineers. Compiled From The Notes Of Major Long, Mr. T. Say, And Other Gentlemen Of The Party, By Edwin Thomas, Botanist And Geologist To The Expedition James, Edwin (1797-1861) Americana & Canadiana
(8 3/4 x 5 5/8 inches). vii, [1], 344; vii, [1], 356; vii, [1], 347pp. Folding engraved map, foldin…
