Beat the Clock was a Goodson-Todman game show which  aired on CBS
television from 1950 to 1958 and on ABC from 1958 to 1961. The original
host of the show was Bud Collyer (shown above).

The Beat the Clock home game

The Adventures of Superman was a long running radio serial adapted from
the DC Comics character that originally aired from 1940 to 1951. It began as
a syndicated show on New York City’s WOR. The Serial went to the Mutual
network from August 31, 1942, to February 4, 1949 as a 15-minute show,
usually running three or five times a week. Superman was picked up by
the ABC radio network in October of 1949, returning to afternoon air
time twice a week until March 1, 1951. Bud Collyer played the title
role with Joan Alexander playing Lois Lane, both pictured below.

Bud Collyer played Superman/Clark Kent 

Joan Alexander was Lois Lane

That well known signature opening of Superman, one
of the most famous in radio history, was delivered by
Jackson Beck (above), the announcer-narrator of the
show from 1943 to 1950.
 

First Superman comic