Based on tickets in my collection, I can supply the following information:
- In 1934, the studio at 139 West Broadway was called the "CBS RADIO PLAYHOUSE". I have tickets for the June 10 broadcast of "Bond Bread Presents Julia Sanderson and Frank Crumit" and the October 11 broadcast of "Fred Waring and His Pennsylvanians".
- On November 20, 1934, the studio at 141 West Broadway was called the "CBS 44TH ST. RADIO PLAYHOUSE" on a ticket for "Lavender and Old Lace". The same studio name is seen on a December 20 ticket for "Fred Waring and His Pennsylvanians" (which apparently relocated to the new studio).
- On March 22, 1936, the studio at 141 is still called the "CBS 44TH ST. RADIO PLAYHOUSE" for the "Eddie Cantor" program. There is a large numeral "1" on the right edge of the ticket, although no specific explanation of why.
- On May 8, 1936, Socony Oil's "Flying Red Horse Tavern" originated from the "CBS 44TH ST. RADIO PLAYHOUSE" at 141. This time, the extreme right edge of the ticket reads "PLAYHOUSE 1". The same is seen on a July 4 ticket for "Your Hit Parade" and a July 27 ticket for "Pick and Pat in Pipe Smoking Time".
I have no tickets originating from the studio after that.