The siren in Gibbon, NE is an Erick fire siren, made by the Erick Electric Siren Company of St. Paul, MN. They are named after their inventor Emil Erick. Good quality sirens, and built to last. They're easy to tell from the Decot Red Arrows: the Erick sirens use a direct-coupled motor shaft, mounting legs are welded smooth onto the motor housing, and they are usually single tone 12 or 16 port. The exact shape of the Erick sirens varied over the years - some had a taller "basket" while others were flatter.
Erick was sold off to another Minnesota firm during the 1940s. Production continued under new ownership until the 1950s or thereabout. The later Erick sirens are different from their pre-war counterparts. In fact they were very similar to the sirens produced by Decot Engineering Works of St. Paul, MN.
Here is one of several Erick siren advertisements. They were most popular in Minnesota, Nebraska, South Dakota, and Wisconsin.

- Erick Advertisement, 1920s.
- Erick 4.png (147.41 KiB) Viewed 3840 times