Regular readers know that I'm a big fan of the tract books from the Bureau of Land Management. These books are supposed to notate all claims to federal land and served as a register of what claims had been established for what property.
But in searching one surrendered homestead claim, I discovered that it had not been entered in the tract book.
Any source or reference can very easily be only 99.99% complete. Remember that.
Because it seems like for most of us our ancestors lived in the land of .01%