Fascinating. Steve Allen Show produced in pre-communist Havana, Cuba, 1958.

Mamie van Doren appears at the 39:23 mark.  Here is her Wikipage.

February 9, 1958. 

Steve Allen, Ann Southern, Steve Lawrence and Eddie Gormet, Dinah Shore, then Frank Sinatra.  This is a wonderful song-and-dance piece.  It was funny to see Frank Sinatra introduced, standing all alone at a lamp post.  What could that mean?