The names given to the boats were, for the small one, Emma Dean, the pilot boat (after Mrs.Powell), Kitty Clyde's Sister, Maid of the Canyon, and No-Name.

The members of the party, together with their disposition in the boats at starting, were as follows: John Wesley Powell, John C.Sumner, William H.Dunn--the Emma Dean; Walter H.
Powell, G.Y.

Bradley--Kitty Clyde's Sister; O.G.Howland, Seneca Howland, Frank Goodman--the No-Name; William R.Hawkins, Andrew Hall--Maid of the Canyon.
Powell, as noted, had been a volunteer officer in the Civil War.

After that he was connected with the Wesleyan University at Bloomington, Illinois, and with the Normal University at Normal, in the same state.
Sumner, generally known as Jack Sumner, had also been a soldier in the late war.

He was fair-haired and delicate-looking, but with a strong constitution.