Vibroplex Vari-speed on a bug

Vibroplex Vari-speed close up

Extendadot - To slow down your bug

Heathkit HD-16 CPO
A tank!

Instructograph code sending machine

Code learning manual circa unknown

Ted McElroy CPO with original tubes marked
"TRIAD TUBES, Specially Made, T.R.McElroy, Boston MASS."

A land wire telegraph sounder

A Triplex Morse Code practice set

Boy Scout trainer circa 1933

Boy Scout trainer circa 1958
I had one as a scout