Battle for Aachen," After the Battle, Winston G. Ramsey, ed., No.
Battle for Cologne," After the Battle, by Karel Margry, No. 104, 1999.
Aachen, by Charles Whiting, Jove Publications, 1980, ISBN 0-87216-634-1
with the Enemy: How GIs Fought the War in Europe, 1944-1945, by Michael D.
Doubler, University Press of Kansas, 1995, ISBN 0-70060-744-7
War Against Germany: Europe and Adjacent Areas (United States Army in World War
II), by Center of Military History, United States Army, 1994, Brasseys, Inc.,
many of the Sherman references you'll find on the Vehicles References page.
The Battle for Aachen
of the Diorama