2N3010 semiconductor manufactured by Sylvania, listed as 2N3010 (circa 1979).

2N3009 semiconductor manufactured by Sylvania, listed as 2N3009 (circa 1979).

2N3008 semiconductor manufactured by Sylvania, listed as 2N3008 (circa 1979).

2N3007 semiconductor manufactured by Sylvania, listed as 2N3007 (circa 1979).

2N3006 semiconductor manufactured by Sylvania, listed as 2N3006 (circa 1979).

2N3005 semiconductor manufactured by Sylvania, listed as 2N3005 (circa 1979).

2N2999 semiconductor manufactured by Sylvania, listed as 2N2999 (circa 1979).

2N2998 semiconductor manufactured by Sylvania, listed as 2N2998 (circa 1979).

2N2997 semiconductor manufactured by Sylvania, listed as 2N2997 (circa 1979).

2N2996 semiconductor manufactured by Sylvania, listed as 2N2996 (circa 1979).

2N2971 semiconductor manufactured by Sylvania, listed as 2N2971 (circa 1979).

2N2970 semiconductor manufactured by Sylvania, listed as 2N2970 (circa 1979).

2N2969 semiconductor manufactured by Sylvania, listed as 2N2969 (circa 1979).

2N2968A semiconductor manufactured by Sylvania, listed as 2N2968A (circa 1979).

2N2968 semiconductor manufactured by Sylvania, listed as 2N2968 (circa 1979).

2N2966 semiconductor manufactured by Sylvania, listed as 2N2966 (circa 1979).

2N2961 semiconductor manufactured by Sylvania, listed as 2N2961 (circa 1979).

2N2960 semiconductor manufactured by Sylvania, listed as 2N2960 (circa 1979).

2N2959 semiconductor manufactured by Sylvania, listed as 2N2959 (circa 1979).

2N2958 semiconductor manufactured by Sylvania, listed as 2N2958 (circa 1979).