1N2979 semiconductor manufactured by United Technical Publications, listed as 1N2979 (circa 1965).

1N3024 semiconductor manufactured by United Technical Publications, listed as 1N3024 (circa 1965).

1N2977B semiconductor manufactured by United Technical Publications, listed as 1N2977B (circa 1965).

1N3023B semiconductor manufactured by United Technical Publications, listed as 1N3023B (circa 1965).

1N2977A semiconductor manufactured by United Technical Publications, listed as 1N2977A (circa 1965).

1N3023A semiconductor manufactured by United Technical Publications, listed as 1N3023A (circa 1965).

1N2977 semiconductor manufactured by United Technical Publications, listed as 1N2977 (circa 1965).

1N3023 semiconductor manufactured by United Technical Publications, listed as 1N3023 (circa 1965).

1N2976B semiconductor manufactured by United Technical Publications, listed as 1N2976B (circa 1965).

1N3022B semiconductor manufactured by United Technical Publications, listed as 1N3022B (circa 1965).

1N2976A semiconductor manufactured by United Technical Publications, listed as 1N2976A (circa 1965).

1N3022A semiconductor manufactured by United Technical Publications, listed as 1N3022A (circa 1965).

1N2976 semiconductor manufactured by United Technical Publications, listed as 1N2976 (circa 1965).

1N3022 semiconductor manufactured by United Technical Publications, listed as 1N3022 (circa 1965).

1N2975B semiconductor manufactured by United Technical Publications, listed as 1N2975B (circa 1965).

1N3021B semiconductor manufactured by United Technical Publications, listed as 1N3021B (circa 1965).

1N2975A semiconductor manufactured by United Technical Publications, listed as 1N2975A (circa 1965).

1N2975 semiconductor manufactured by United Technical Publications, listed as 1N2975 (circa 1965).

1N3021 semiconductor manufactured by United Technical Publications, listed as 1N3021 (circa 1965).

1N2974B semiconductor manufactured by United Technical Publications, listed as 1N2974B (circa 1965).