2N543 semiconductor manufactured by Allied Electronics, listed as 2N543 (circa 1964).

2N542 semiconductor manufactured by Allied Electronics, listed as 2N542 (circa 1964).

2N480 semiconductor manufactured by Allied Electronics, listed as 2N480 (circa 1964).

2N479 semiconductor manufactured by Allied Electronics, listed as 2N479 (circa 1964).

2N478 semiconductor manufactured by Allied Electronics, listed as 2N478 (circa 1964).

2N477 semiconductor manufactured by Allied Electronics, listed as 2N477 (circa 1964).

2N476 semiconductor manufactured by Allied Electronics, listed as 2N476 (circa 1964).

2N475 semiconductor manufactured by Allied Electronics, listed as 2N475 (circa 1964).

2N474 semiconductor manufactured by Allied Electronics, listed as 2N474 (circa 1964).

2N473 semiconductor manufactured by Allied Electronics, listed as 2N473 (circa 1964).

2N472 semiconductor manufactured by Allied Electronics, listed as 2N472 (circa 1964).

2N470 semiconductor manufactured by Allied Electronics, listed as 2N470 (circa 1964).

2N336A semiconductor manufactured by Allied Electronics, listed as 2N336A (circa 1964).

2N336 semiconductor manufactured by Allied Electronics, listed as 2N336 (circa 1964).

2N335A semiconductor manufactured by Allied Electronics, listed as 2N335A (circa 1964).

2N335 semiconductor manufactured by Allied Electronics, listed as 2N335 (circa 1964).

2N334A semiconductor manufactured by Allied Electronics, listed as 2N334A (circa 1964).

2N334 semiconductor manufactured by Allied Electronics, listed as 2N334 (circa 1964).

2N333A semiconductor manufactured by Allied Electronics, listed as 2N333A (circa 1964).

2N333 semiconductor manufactured by Allied Electronics, listed as 2N333 (circa 1964).