1N2055 semiconductor manufactured by United Technical Publications, listed as 1N2055 (circa 1969).

1N2054 semiconductor manufactured by United Technical Publications, listed as 1N2054 (circa 1969).

1N1733 semiconductor manufactured by United Technical Publications, listed as 1N1733 (circa 1969).

1N1732 semiconductor manufactured by United Technical Publications, listed as 1N1732 (circa 1969).

1N1731 semiconductor manufactured by United Technical Publications, listed as 1N1731 (circa 1969).

1N1730 semiconductor manufactured by United Technical Publications, listed as 1N1730 (circa 1969).

1N1712 semiconductor manufactured by United Technical Publications, listed as 1N1712 (circa 1969).

1N1711 semiconductor manufactured by United Technical Publications, listed as 1N1711 (circa 1969).

1N1710 semiconductor manufactured by United Technical Publications, listed as 1N1710 (circa 1969).

1N1709 semiconductor manufactured by United Technical Publications, listed as 1N1709 (circa 1969).

1N1708 semiconductor manufactured by United Technical Publications, listed as 1N1708 (circa 1969).

1N1707 semiconductor manufactured by United Technical Publications, listed as 1N1707 (circa 1969).

1N1616A semiconductor manufactured by United Technical Publications, listed as 1N1616A (circa 1969).

1N1615A semiconductor manufactured by United Technical Publications, listed as 1N1615A (circa 1969).

1N1614A semiconductor manufactured by United Technical Publications, listed as 1N1614A (circa 1969).

1N1613A semiconductor manufactured by United Technical Publications, listed as 1N1613A (circa 1969).

1N1612A semiconductor manufactured by United Technical Publications, listed as 1N1612A (circa 1969).

1N1587 semiconductor manufactured by United Technical Publications, listed as 1N1587 (circa 1969).

1N1586 semiconductor manufactured by United Technical Publications, listed as 1N1586 (circa 1969).

1N1585 semiconductor manufactured by United Technical Publications, listed as 1N1585 (circa 1969).