ACCOUNT

OF AN

EXPEDITION

FROM PITTSBURGH

ΤΟ

THE ROCKY MOUNTAINS,

PERFORMED

IN THE YEARS 1819, 1820.

BY ORDER OF THE

HON. J. C. CALHOUN, SECRETARY Of War,

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 JAMES,

LONGMAN, HURST, REES, ORME, AND BROWN,

PATERNOSTER-ROW.

LONDON:

Printed by A. & R. Spottiswoode,

New-Street-Square.

ΤΟ

THE HONOURABLE

JOHN C. CALHOUN,

SECRETARY OF WAR;

WHOSE LIBERAL VIEWS, ENLIGHTENED POLICY, AND

JUDICIOUS MEASURES,

WHILE THEY HAVE BEEN PROSECUTED WITH THE UTMOST

CIRCUMSPECTION AND ECONOMY,

HAVE CONTRIBUTED IN AN EMINENT DEGREE

TO THE

ADVANCEMENT OF THE NATIONAL CHARACTER OF THE

UNITED STATES,

BOTH IN SCIENCE AND POLITICS;

THE FOLLOWING PAGES

ARE MOST RESPECTFULLY DEDICATED BY

THE AUTHORS,

AS A FEEBLE TESTIMONIAL OF

THEIR HIGH CONSIDERATION OF HIS TALENTS AND PATRIOTISM,

AND A GRATEFUL ACKNOWLEDGMENT OF

HIS INDULGENCE AND PATRONAGE.