Citation Model of Copan by A.P. Maudslay, from the Pan-American Union, probably made between 1889 and 1902. Back to Copan. About the Hieroglyphic Staircase. This site is maintained by Ryan Cohagan at Creighton University. Please feel free to visit our course syllabus. My e-mail address is cohagan@creighton.edu I would appreciate some feedback. Created: November 10, 2001 Updated: December 12, 2001