Thanks Wilson for your reply.
I did speak to Otto before he passed away and at that time he said someone was interested but he wasn't sure what this person was going to do with the info. So at this point I don't know if anyone has the rights to the info to do further research or reprints. It seems a shame for all the information just to be for ought. I hope he or Della one gave someone permission to continue with reprints or an additional book.
I am Mary from the Cape Girardeau area. My father has one living sister in Cape Girardeau at this time. She is nearly 90 years of age.