The Bureau of Industrial Service for ABC or Elgin Watch. The bureau was a division of ad agency Young & Rubicam and was used widely by those in the television industry for distribution of publicity material. There is a photographer's stamp asking for credit, but I can't read the name or much of the address.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
{{Information |Description=Photo of Gertrude Berg and Mikhail Rasumny in the drama ''Hollywood and Hearts'' on ''The Elgin Hour''. |Source=[http://www.ebay.com/itm/1954-Gertrude-Berg-and-Mikhail-Rasumny-in-THE-ELGIN-HOUR-Press-Photo-/150884639113?pt=Ar...