The party, as now arranged, consisted of the following persons:
S. H. Long, Major, U. S. Topographical Engineers, commanding the expedition.
J. R. Bell, Captain Lt. Artillery, to act as Journalist.[70]
W. H. Swift, assistant Topographer, commanding guard.
Thos. Say, Zoologist, &c.
E. James, Botanist, Geologist, and Surgeon.
T. R. Peale, assistant Naturalist.
Saml. Seymour, Landscape Painter.
Stephen Julien, Interpreter, French and Indian.
H. Dougherty, Hunter.