74947 semiconductor manufactured by Lafayette Radio Electronics, listed as 74947 (circa 1969).

74939 semiconductor manufactured by Lafayette Radio Electronics, listed as 74939 (circa 1969).

74921 semiconductor manufactured by Lafayette Radio Electronics, listed as 74921 (circa 1969).

74632 semiconductor manufactured by Lafayette Radio Electronics, listed as 74632 (circa 1969).

74848 semiconductor manufactured by Lafayette Radio Electronics, listed as 74848 (circa 1969).

74509 semiconductor manufactured by Lafayette Radio Electronics, listed as 74509 (circa 1969).

74426 semiconductor manufactured by Lafayette Radio Electronics, listed as 74426 (circa 1969).

74418 semiconductor manufactured by Lafayette Radio Electronics, listed as 74418 (circa 1969).

74111 semiconductor manufactured by Lafayette Radio Electronics, listed as 74111 (circa 1969).

74095 semiconductor manufactured by Lafayette Radio Electronics, listed as 74095 (circa 1969).

74087 semiconductor manufactured by Lafayette Radio Electronics, listed as 74087 (circa 1969).

74046 semiconductor manufactured by Lafayette Radio Electronics, listed as 74046 (circa 1969).

2N2160 semiconductor manufactured by Lafayette Radio Electronics, listed as 2N2160 (circa 1969).

2N1415 semiconductor manufactured by Lafayette Radio Electronics, listed as 2N1415 (circa 1969).

2N508 semiconductor manufactured by Lafayette Radio Electronics, listed as 2N508 (circa 1969).

2N404 semiconductor manufactured by Lafayette Radio Electronics, listed as 2N404 (circa 1969).

2N324 semiconductor manufactured by Lafayette Radio Electronics, listed as 2N324 (circa 1969).

2N190 semiconductor manufactured by Lafayette Radio Electronics, listed as 2N190 (circa 1969).

2N188A semiconductor manufactured by Lafayette Radio Electronics, listed as 2N188A (circa 1969).

2N173 semiconductor manufactured by Lafayette Radio Electronics, listed as 2N173 (circa 1969).