CQ, Jun 1967, p. 84.
CQ, Sep 1967, p. 7. (some details)
CQ, Dec 1967, p. 23. (some details)
CQ, Jan 1968, p. 11. (other versions)
Ham Radio, Jan 1969, p. 45. (other versions explained)
73, Oct 1969, p. 115.
TU-7 - Dual channel (assembled)
TU-7B - Dual channel (kit)
TU-7C - Single channel (kit)
TU-7D - Single channel (assembled)
Kit of assembled.