Here is a nice Har-Cam catalogue probably from 1948 with Police, Fire and Commercial FM radio equipment. Bought from Tom French W1IMQ - thanks! Back in 1941, Mr. Harvey sold Harvey Radio Labs to Mr. Lyman and they kept producing radio equipment for many years. The company seems to have been mostly into FM gear and broadcasting. This period of the company is difficult to find info about, but here is a couple of rigs they produced. Enjoy the reading...
Cover, page 1