Circuit boards, 1968-1982

(741B) Circuit board, January 17, 1968; (757) Circuit board, Aviation Facility, March 10, 1969; (955BC) Printed circuit board, May 22, 1969; (1077B) Instrument panels, circuit board, two copies, May 4, 1970; (1187B) Parts: printed circuit board, mm ruler, orange wiring piece, March 19, 1971; (1321B) Circuit boards, February 4, 1972; (1377) Teletype system, circuit boards, July 20, 1971; (1378B) Overlay copies of circuit board, May 22, 1972; (1432B) Circuit board, December 7, 1972; (1434B) Circuit board of cut-down device, December 29, 1972; (1485) Printed circuit cards, February 25, 1972; (1503) Two circuit boards, March 22, 1972; (1550) Solid state integrator circuit board, May 17, 1972; (5543BC) Circuit boards workmanship, High Altitude Observatory (HAO), July 31, 1981; (5811BC) Circuit board, September 24, 1982.