Jan Savitt Orchestra at KYW

Trivia question:
What transcription recording is located in the cornerstone of the KYW building 1619 Walnut St. Philadelphia?
Ans:

39714. Jan Savitt and The Top Hatters. September 14, 1937. KYW, Philadelphia. Sustaining. The first broadcast from the new and still incomplete studios of KYW at 1619 Walnut Street. The announcer says that a recording of this broadcast will be placed in the cornerstone of the building. The first tune is "Have You Got Any Castles, Baby?" Bon Bon, Carlotta Dale, Jan Savitt and His Top Hatters. 24:13. Audio condition: Very good to excellent. Complete.