FYI
The Missouri Anatomical Board was created to distribute bodies to various medical schools. In early years this was mostly a process of rationing the limited number of bodies. In Missouri, the statutory disposition for paupers bodies was (and is) donation to the anatomical board. In more recent years donation has become more accepted and more popular, so most donated bodies are not paupers. However generally when the donation is made at the request of the deceased, it is more often then not directly to the school and not through the anatomical board.
For the most part donated bodies are cremated at the end of their usefulness and the ashes buried in a common grave. I know that at present most schools do not return the body to the family and I suspect that it was unlikely in the time frame you are discussing, especially considering how difficult it would be to transport an unembalmed body to Canada.