The 8-track tape technology was popular from the mid-1960s to
the early 1980s.
Inventor George Eash invented a design in 1953, called the
Fidelipac cartridge, also called the NAB cartridge.
The Lear Jet Stereo 8 cartridge was designed by Richard Kraus
while working for the Lear Jet Corporation.
George Eash (1927 – 2006)