This is from Bill Ruxton at Allexperts.com:
"Standel was best known as a maker of the first successful transistorized amplifiers. The company was started as “Standard Electronics,” a part-time radio repair business, in electronics engineer Bob Crooks’ garage in New Jersey. In the 1950s, Crooks was approached by guitar innovator Paul Bigsby about making amplifiers, and by 1961, Crooks developed a line of powerful solid-state amps that quickly became popular."
"In 1966 or 1967, the Harptone company offered to build guitars for Standel, and hired luthier Stan Koontz to design a line of acoustic and electric guitars and basses. These were made at Harptone’s facilities in New Jersey, and according to one source, only about 200 were made."
. . . and the following was originally posted at the:
Unofficial Martin Guitar Forum, Founded by Steve Stallings.
"Standel is mostly famous for their amplifiers used by Chet Atkins, Merle Travis and many Nashville musicians"
"Standel made three attempts at marketing electric guitars under the Standel name. The best article on the subject is in Vintage Guitar magazine, May, 2002. It is very detailed and far beyond the scope of this website."
"In 1967, a third and final attempt at electric guitars was made. This time, Standel was determined to create something very special. This series of instruments was designed by luthier Sam Koontz of Harptone Manufacturing Corporation located at 127 South 15th Street, Newark, New Jersey. These instruments were beautifully made and are quite rare, about 300 were made. Prices ranged from $385 to $1,200 (in 1967 dollars). The instrument pictured below originally sold for $922 including hardshell case. Today, examples of these instruments have appreciated in value considerably and sell for very respectable prices."
I had originally asked Acoustic Guitar to create this group before I knew there was already a great Harptone/Standel site on Facebook hosted by Eric Sutton, who knows more about my Standel E-6N Deluxe than either Stan or Del.
Anyway, we'll see what happens. With less than 300 of these things out there, maybe the market for Standel/Harptone groups and forums is already saturated.