My Bookhouse Set with bookcase

I have a MY Bookhouse set with a bookcase that is painted blue with a child at each end reading with a dog at their feet. The books are leather blue in color. The copywrite date is 1920/1928. They have the number 16 on the lower inside corner of the title page. I have the complete set. I believe this is a rare set and am trying to find out information about it, if anyone could contact me. Thanks. Email dbartlett@stny.rr.com