WW5J electron tube manufactured by United Technical Publications, listed as WW5J (circa 1965).

WW4J electron tube manufactured by United Technical Publications, listed as WW4J (circa 1965).

WW3J electron tube manufactured by United Technical Publications, listed as WW3J (circa 1965).

WW2J electron tube manufactured by United Technical Publications, listed as WW2J (circa 1965).

WW22J electron tube manufactured by United Technical Publications, listed as WW22J (circa 1965).

MR5 electron tube manufactured by United Technical Publications, listed as MR5 (circa 1965).

MR4 electron tube manufactured by United Technical Publications, listed as MR4 (circa 1965).

MR3 electron tube manufactured by United Technical Publications, listed as MR3 (circa 1965).

MR2 electron tube manufactured by United Technical Publications, listed as MR2 (circa 1965).

MR1 electron tube manufactured by United Technical Publications, listed as MR1 (circa 1965).

6V electron tube manufactured by United Technical Publications, listed as 6V (circa 1965).

5EA electron tube manufactured by United Technical Publications, listed as 5EA (circa 1965).

4DA electron tube manufactured by United Technical Publications, listed as 4DA (circa 1965).

2DA electron tube manufactured by United Technical Publications, listed as 2DA (circa 1965).

8Y electron tube manufactured by United Technical Publications, listed as 8Y (circa 1965).

4D electron tube manufactured by United Technical Publications, listed as 4D (circa 1965).

2D electron tube manufactured by United Technical Publications, listed as 2D (circa 1965).

2C electron tube manufactured by United Technical Publications, listed as 2C (circa 1965).

NV3 electron tube manufactured by United Technical Publications, listed as NV3 (circa 1965).

6VI electron tube manufactured by United Technical Publications, listed as 6VI (circa 1965).