Another one from the April 8 1940 Toronto Daily Star:
Movie theatres still sometimes featured in-person appearances in 1940 – the last remnants of the old vaudeville performing circuit. Wikipedia had information on a lot of these people.
Lee Sims (1898-1966) was a pianist, composer, and publisher who made 60 records for Brunswick in the 1920s and 1930s. With Ilomay Bailey, his wife, he starred in the Chase and Sanborn Hour radio program on NBC.
Harriet Hoctor (1905-1977) was a ballerina; George Gershwin once wrote a piece specifically for her, which is pretty cool. I could find nothing at all about Brantley & Linder; they are seemingly lost to history.
Fred Sanborn (1899-1961), no relation to the Sanborn of Chase and Sanborn (as far as I know), was a vaudeville performer. He was part of Ted Healy and his Southern Gentlemen, which also included the future Three Stooges.
Milbourne Christopher (1914-1984) was a magician who spent a good deal of time debunking parapsychology experiments. The Society of American Magicians honors him by annually presenting Milbourne Christopher awards to various magicians.
Frank Trado (1904-1980) and Pete Trado (1904-1969) were twin brothers who worked as a comedy duo. There is no Wikipedia entry for them, but I did find a picture of Mr. and Mrs. Frank Trado and their dog Sheba. They look reasonably happy (except maybe for Sheba).