Shows students and archaeologists unearthing the remains of an ancient Indian culture in southwestern Illinois.
Release Date: January 01, 1976
December 31, 2022
Invalid Date
November 30, 2022
September 18, 2023
January 01, 1999
July 03, 2023
May 02, 2024
July 15, 2012
November 30, 1980
January 01, 2007
May 12, 2024
December 02, 2015
January 01, 2020
September 01, 2022
October 09, 2022
March 15, 1994
Invalid Date
November 13, 2000
July 17, 1987
November 19, 2004