Federal Signal (STH,STL,SD,2T22,3T22)
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Single-phase 2T22

Photo credit: The Geek Group
 
Federal STH-10 (10HP) and Model 7

Photo credit: Adam Biscow
 
Federal STL-10 in Amherst, MA

Photo credit: Adam Smith
 
Federal STH-10, rusting

Photo credit: Adam Smith
 
Federal Model STH-10
Sth-10 Taken at Hauppauge Fire Department HQ

Photo credit: Greg Gottlieb
 
STH-10 Civil Defense Colors

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STH-10 Siren Head

Photo credit: Adam Biscow
 
Federal Model STL-10

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Federal 2T22
Located in Corinth Square shopping center, Prairie Village, KS

Photo credit: Andy Stoy