[Milsurplus] Aftermarket control boxes for ARC ?

[Hue Miller]

Michael, I don't know if this is germane to your studies, but I seem to 
recall "aftermarket"
control boxes made to operate with ARC equipment, in the early postwar 
years. Does that
sound familiar? Bendix comes to mind, and I thought I had a photo booklet 
put together
by an avionics company about the radio installation in Hercules Powder 
company's
Beech 18, using some of this gear, but I fear I haven't been a good steward 
of this document
and don't know where it may be. It has been many years, but I'm thinking I 
actually might
have once had such a control box unit for the Command ARC equipment.  -Hue