4 pages found in
Tlaxcala:
Colorplate reproductions and descriptions of Tlaxcalan drawings of the Spanish conquest, completed before 1560.
http://bancroft.berkeley.edu/Exhibits/nativeamericans/25.html
Academic study of kinship and compadre relationshps.
http://eclectic.ss.uci.edu/~drwhite/tlaxcala/
Images and description of lithographed atlas map, 1858.
http://www.davidrumsey.com/maps2930.html
Birdlist and links to habitat information.
http://www.birdlist.org/nam/mexico/tlaxcala/tlaxcala.htm