Larkin desks - general info request

Apparently in 1908 at least, they were giving a standard desk with a $10 purchase of products for re-sale. The higher end roll-top desk required $30 of products (see the catalog page): https://www.worthpoint.com/articles/article/everymans-desk-history-of-the-larkin-desk

 

I have Larkin Desk #810 that came from my Great-Aunt's house, my daughter has a different one that came from my mother's house. My mother always told me that the one she had her older sister got for selling soap. I also have a pair of gilt-framed prints of George and Martha Washington that my mother never hung up - kept wrapped up on a closet shelf- that she said they also got as premiums. I have them hanging up.