I *WISH* I could find more on my Yaqui ancestry. There is the Pascua Yaqui Tribe of Arizona online, but they don't take you as a member unless your ancestor is on one of their rolls and you must be at leat 1/4 Yaqui to join.
My great-great grandfather was 1/2 YAqui and 1/2 Mayo Indian from Cananea, Sonora, Mexico.
I'm pretty sure there were churches in Sonora - I will google around and see what's there. Maybe someone can write them about their records. I do not speak or write Spanish very well, so it can't be me... unfortunately.
Glad you posted this! Danielle Brown email@example.com