National Bird Dog Museum a couple of weeks back, while visiting Grand Junction, Tennessee for the recently-concluded National Championship. It reminds me of the old World War Two radios you'd see in black and white photos. I bet that it used to shoc-- er, stimulate the hell out of dogs back in the day, don't you?
A cursory internet search (always reliable, of course!) doesn't offer much history on the collar. It's pretty rough around the edges, I'll say that. The Bill Boatman Company is a venerable dog supply company -- I can remember reading their photocopied mail-order catalog as a kid. But I'm not certain if the company actually manufactured these units, or if they were simply a reseller. Any ideas, anyone?