Ambrose Bierce; a biography.

O'Connor, Richard, 1915-1975.
Boston : Little, Brown, [1967]
[1st ed.]

Bret Harte : a biography.

O'Connor, Richard, 1915-1975.
Boston : Little, Brown, [1966]
[1st ed.]

The cactus throne; the tragedy of Maximilian and Carlotta.

O'Connor, Richard, 1915-1975.
New York : Putnam, [1971]

Courtroom warrior; the combative career of William Travers Jerome.

O'Connor, Richard, 1915-1975.
Boston : Little, Brown, [1963]
[1st ed.]

The German-Americans; an informal history.

O'Connor, Richard, 1915-1975.
Boston : Little, Brown, [1968]
[1st ed.]

Gould's millions.

O'Connor, Richard, 1915-1975.
Garden City, N. Y. : Doubleday, 1962.
[1st ed.]

The Irish; portrait of a people.

O'Connor, Richard, 1915-1975.
New York : Putnam, [1971]

Iron wheels and broken men; the railroad barons and the plunder of the West.

O'Connor, Richard, 1915-1975.
New York : Putnam, [1973]

Jack London, a biography.

O'Connor, Richard, 1915-1975.
Boston : Little, Brown, [1964]
[1st ed.]

The lost revolutionary; a biography of John Reed

O'Connor, Richard, 1915-1975.
New York : Harcourt, Brace & World, [1967]
[1st ed.]

O. Henry: the legendary life of William S. Porter.

O'Connor, Richard, 1915-1975.
Garden City, N.Y. : Doubleday, 1970.
[1st ed.]

The oil barons; men of greed and grandeur.

O'Connor, Richard, 1915-1975.
Boston : Little, Brown, [1971]

Pacific destiny; an informal history of the U.S. in the Far East: 1776-1968.

O'Connor, Richard, 1915-1975.
Boston : Little, Brown, [1969]
[1st ed.]

Rogue's progress : the fabulous adventures of Wilson Mizner

O'Connor, Richard, 1915-1975.
New York : Putnam, [1975]

Sheridan, the inevitable.

O'Connor, Richard, 1915-1975.
Indianapolis : Bobbs-Merrill, [1953]
[1st ed.]

The spirit soldiers; a historical narrative of the Boxer Rebellion.

O'Connor, Richard, 1915-1975.
New York : Putnam, [1973]

The spirit soldiers; a historical narrative of the Boxer Rebellion.

O'Connor, Richard, 1915-1975.
New York : Putnam, [1973]

Winged legend; the story of Amelia Earhart

O'Connor, Richard, 1915-1975.
New York : Putnam, [1970]