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Case Description
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Mark Allen Collman, a 21-year-old from Yorkville, Illinois, was last seen on April 3, 1979. On the day of his disappearance, his parents were alerted when his employer called to report that Mark had not shown up for his second-shift job at a local Model Box factory. He lived with his parents in their basement, and his sudden absence without any communication was unusual, especially since he was close to his younger siblings.
Despite extensive searches and inquiries, no trace of Mark has ...Read More
Last Seen: Apr 03, 1979
Despite extensive searches and inquiries, no trace of Mark has ...Read More
Last Seen: Apr 03, 1979
Links to Additional Sources (9)
See any mistakes?Victim Details
Oct 06, 2011
Nov 08, 2022
Mark
Collman
67
21
70 inches
71 inches
140 lbs
160 lbs
White / Caucasian
Male
Apr 03, 1979
Yorkville
Illinois
Kendall County
60560
282
10881
Yorkville Police Department
Yorkville
Illinois
Kendall County
60560
Patrick McMahon
Detective Sergeant
804 Game Farm Road, Illinois
6305534340
Local
Law Enforcement
90-4115
Yorkville Police Department
Brown
Brown
Brown
11/24/2025
Area Last Seen:







