Annette, From what I recall there is at least one W.R. Boggs bible and a few photos that I believe my mother ended up with. There was so much to go through after my grandmother's passing and it wasn't well organized. My mother's name is Fredia and she is the only daughter of Irvin's eldest daughter Hazel.
I found another post of yours with a yahoo email address. Is that address still active? I can't say I'd be able to give you much information but I can probably put you in touch with Irvin's surviving children if you haven't already reached them.