Ralph F. Sibert, "boyfriend of the photograph," as the inset picture calls him, seems 100% obscure today. Different case for Little Jack Little, a smooth and charming pianst. Born in London; educated at the University of Iowa. From the opening of one of his 1930 radio shows, his trademarks:

Here 'tis, and yours very truly, Little Jack Little.

Knocked himself off in 1956.