The Shelby Township Library hosted Ross Richardson of Michigan Mysteries. Ross has been a Michigan shipwreck hunter for decades and brings tons of knowledge, video,  and an entertaining speaking style to his presentations. 
If your library has not previously hosted Ross I recommend him. He is located in the Traverse City area, but willing to travel anywhere in the state. 
https://www.michiganmysteries.com/
NMIWrecks@gmail.com

Elizabeth

Elizabeth Campion, Librarian
Shelby Township Library
52610 Van Dyke Avenue
Shelby Township, MI 48316
586-739-7414