The ancient Popes

Weltin, E. G. (Edward George), 1911-2002.
Westminster, Md. : Newman Press, 1964.

The bad popes

Chamberlin, E. R. (Eric Russell), 1926-2006.
New York : Dorset Press, 1986.

The Book of the Popes.

Loomis, Louise Ropes, 1874-1958.
New York : Nova Science Publishers, Incorporated, 2018.

The book of the Popes. Liber pontificalis.

New York : Octagon Books, 1965-

The history of Italy (1549)

Thomas, William, -1554.
Ithaca, N.Y. : Published for the Folger Shakespeare Library [by] Cornell University Press, [1963]

Pope Benedict XII (1334-1342) : the guardian of orthodoxy

Amsterdam : Amsterdam University Press, [2018]

The Popes, a concise biographical history.

John, Eric.
New York : Hawthorn Books, [1964]
1st ed.]

The popes and science : the history of the papal relations to science during the Middle Ages and dow

Walsh, James J. (James Joseph), 1865-1942.
New York : Fordham University Press, 1913, c1908.
Knights of Columbus edition (40,000).

The popes; papal history in picture and word

Matt, Leonard von.
New York : Universe Books, [1963]
1st American ed.]

Popes through the ages

Brusher, Joseph Stanislaus, 1906-
Princeton, N.J. : Van Nostrand, 1959.