Lori - Have you got the Dawes application packet on your grandparents? You can order it from the Forth Worth NARA. Since your grandparents were full blood it may not be included, but in my packet there is a marriage license (also Birth Certificates). They had to prove the marriage b/c she was white, but that doesn't mean that everyone wasn't supposed to provide their marriage certificates also. Let me know if you need further information. Kelli in AR kmstapl@hotmail.com