You wrote "Do you have the "addenda/errata" book?"
I don't have that book or even know what it is. If it relates to the one Iva had published on the family then it sure would be nice for it to be available to other researchers. I only know they all agreed that the information should be shared freely with anyone and the $5 they charged at the time for the book was only to cover the printing costs. At least that is what Iva wrote in letters to my great Aunt Besse.
I apologize for the delay in replying, I have been dealing with metastic lung cancer since Nov 2001. Since then I have had 13 tumors spread to my brain and one covering 3 vertebra on my thoracic spine. To say the least, I have not had much energy for research. I still take a peak at what is happening in the way of research since I enjoyed it so much.