2N1053 semiconductor manufactured by Sylvania, listed as 2N1053 (circa 1979).

2N939 semiconductor manufactured by Sylvania, listed as 2N939 (circa 1979).

2N789 semiconductor manufactured by Sylvania, listed as 2N789 (circa 1979).

2N689A semiconductor manufactured by Sylvania, listed as 2N689A (circa 1979).

2N595 semiconductor manufactured by Sylvania, listed as 2N595 (circa 1979).

2N1275 semiconductor manufactured by Sylvania, listed as 2N1275 (circa 1979).

2N1166 semiconductor manufactured by Sylvania, listed as 2N1166 (circa 1979).

2N1052 semiconductor manufactured by Sylvania, listed as 2N1052 (circa 1979).

2N938 semiconductor manufactured by Sylvania, listed as 2N938 (circa 1979).

2N784A semiconductor manufactured by Sylvania, listed as 2N784A (circa 1979).

2N689 semiconductor manufactured by Sylvania, listed as 2N689 (circa 1979).

2N594 semiconductor manufactured by Sylvania, listed as 2N594 (circa 1979).

2N1165A semiconductor manufactured by Sylvania, listed as 2N1165A (circa 1979).

2N1051 semiconductor manufactured by Sylvania, listed as 2N1051 (circa 1979).

2N937 semiconductor manufactured by Sylvania, listed as 2N937 (circa 1979).

2N784 semiconductor manufactured by Sylvania, listed as 2N784 (circa 1979).

2N688A semiconductor manufactured by Sylvania, listed as 2N688A (circa 1979).

2N593 semiconductor manufactured by Sylvania, listed as 2N593 (circa 1979).

2N1165 semiconductor manufactured by Sylvania, listed as 2N1165 (circa 1979).

2N936 semiconductor manufactured by Sylvania, listed as 2N936 (circa 1979).