Surprised this hasn't been discussed here. I am referring to the air raid sirens that Toronto and Chicago had from the 1950's to the '80's. I saw a picture of several of them being taken down in Toronto and the name of the manufacturer said "CLM Industries".
In the movie "The Blues Brothers" they featured this siren being taken down from a poll in Chicago and used as Jake and Elwood's mobile PA system. It's a big sucker and I've never heard what it sounded like.
Do any of these still exist in Chicago? Anyone know what I'm talking about?? LOL.