2N561 semiconductor manufactured by Sylvania, listed as 2N561 (circa 1979).

2N478 semiconductor manufactured by Sylvania, listed as 2N478 (circa 1979).

2N392 semiconductor manufactured by Sylvania, listed as 2N392 (circa 1979).

2N300 semiconductor manufactured by Sylvania, listed as 2N300 (circa 1979).

2N207A semiconductor manufactured by Sylvania, listed as 2N207A (circa 1979).

2N130A semiconductor manufactured by Sylvania, listed as 2N130A (circa 1979).

2N560 semiconductor manufactured by Sylvania, listed as 2N560 (circa 1979).

2N477 semiconductor manufactured by Sylvania, listed as 2N477 (circa 1979).

2N388A semiconductor manufactured by Sylvania, listed as 2N388A (circa 1979).

2N299 semiconductor manufactured by Sylvania, listed as 2N299 (circa 1979).

2N207 semiconductor manufactured by Sylvania, listed as 2N207 (circa 1979).

2N130 semiconductor manufactured by Sylvania, listed as 2N130 (circa 1979).

2N559 semiconductor manufactured by Sylvania, listed as 2N559 (circa 1979).

2N476 semiconductor manufactured by Sylvania, listed as 2N476 (circa 1979).

2N388 semiconductor manufactured by Sylvania, listed as 2N388 (circa 1979).

2N297A semiconductor manufactured by Sylvania, listed as 2N297A (circa 1979).

2N206 semiconductor manufactured by Sylvania, listed as 2N206 (circa 1979).

2N129 semiconductor manufactured by Sylvania, listed as 2N129 (circa 1979).

2N558 semiconductor manufactured by Sylvania, listed as 2N558 (circa 1979).

2N475A semiconductor manufactured by Sylvania, listed as 2N475A (circa 1979).