DC1 electron tube manufactured by United Technical Publications, listed as DC1 (circa 1969).

415E electron tube manufactured by United Technical Publications, listed as 415E (circa 1969).

457E electron tube manufactured by United Technical Publications, listed as 457E (circa 1969).

455E electron tube manufactured by United Technical Publications, listed as 455E (circa 1969).

PW5 electron tube manufactured by United Technical Publications, listed as PW5 (circa 1969).

8V2H electron tube manufactured by United Technical Publications, listed as 8V2H (circa 1969).

6V2E electron tube manufactured by United Technical Publications, listed as 6V2E (circa 1969).

RC07 electron tube manufactured by United Technical Publications, listed as RC07 (circa 1969).

J3 electron tube manufactured by United Technical Publications, listed as J3 (circa 1969).

E097 electron tube manufactured by United Technical Publications, listed as E097 (circa 1969).

E086 electron tube manufactured by United Technical Publications, listed as E086 (circa 1969).

63R04 electron tube manufactured by United Technical Publications, listed as 63R04 (circa 1969).

MS84 electron tube manufactured by United Technical Publications, listed as MS84 (circa 1969).

8PI electron tube manufactured by United Technical Publications, listed as 8PI (circa 1969).

YN2 electron tube manufactured by United Technical Publications, listed as YN2 (circa 1969).

RN120 electron tube manufactured by United Technical Publications, listed as RN120 (circa 1969).

RM160 electron tube manufactured by United Technical Publications, listed as RM160 (circa 1969).

CM65 electron tube manufactured by United Technical Publications, listed as CM65 (circa 1969).

TS25 electron tube manufactured by United Technical Publications, listed as TS25 (circa 1969).

HS25 electron tube manufactured by United Technical Publications, listed as HS25 (circa 1969).