Here is another one of my maps.
This is about Monroe County, Michigan's old siren system (Pre-Whelens).
Back in the day, they used to have numerous sirens, such as Model 5s, Thunderbolts, and 500SHTTs. But, when the WS-2000s and WS-3000s were put up, most of them were removed.
This map shows where some of the old locations used to be.
https://www.google.com/maps/d/edit?mid= ... sp=sharing
IF YOU HAVE ANY OTHER INFORMATION, SUCH AS LOCATIONS, PLEASE LEAVE IT IN THIS THREAD.