Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean: Vol. 7, Pt. 4

EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVE TO THE PACIFIC OCEAN.
WAR DEPARTMENT.
ROUTES IN CALIFORNIA TO CONNECT WITH THE ROUTES NEAR THE THIRTY-FIFTH AND THIRTY-SECOND
PARALLELS, AND ROUTE NEAR THE THIRTY-SECOND PARALLEL, BETWEEN THE RIO GRANDE AND PIMAS
VILLAGES, EXPLORED BY LIEUTENANT JOHN G. PARKE, CORPS OF TOPOGRAPHICAL ENGINEERS, IN
1854 AND 1855.
BOTANICAL REPORT:
JOHN TORREY, M. D.
WASHINGTON, D. C.
1856.
BY