It took a little longer than I anticipated, but here it is, Television Programs in 1941:

On July 1st, 1941, commercial television broadcasting officially began. In New York City, three stations (representing CBS, NBC and DuMont) were on the air. Only NBC had a commercial license but it was CBS that offered the programs on a weekly basis while DuMont primarily broadcast tests. Read about some of television's earliest shows, including Thrills & Chills Everywhere, Men at Work, Fashion Discoveries in Television and more.

I would have liked to have been able to include more images but unfortunately I simply don't have access to any.  I was surprised myself to stumble upon the two that are included in the article.  Are there more images out there?  Without question, yes.  I just haven't found them yet.