There is no Bonk family tree that I am aware of. All my data is from personal research and I have it on my FTM. My wife's grandmother was Josephine Bonk, Joseph's sister, and her youngest daughter is still living and of sound mind at age 99.
I would be happy to e-mail you my files if you would send me your email address. You can phone it to me if you don't want to send it by return message. My phone number is 651-429-2793.