EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN.
WAR DEPARTMENT.
ROUTE NEAR THE TWENTY-FIFTH PARALLEL, EXPLORED BY LIEUTENANT A. W. WHIPPLE, TOPOGRAPHICAL
ENGINEERS, IN 1853 AND 1854.
REPORT
ON
THE BOTANY OF THE EXPEDITION.
WASHINGTON, D. C.
1856.