How did you find all of the resources?

Old-fashioned research. No Wikipedia here. The library, my friend, is the answer. There are no short-cuts when it comes to research. Surprisingly, much of T.R. Fehrenbach's late 60's -early 80's work is still very relevant. Not so surprising is that there have been new historical discoveries. For instance, in our book about the colonists, 2006 research revealed that not all Paleo-Americans came to North
America via the land-bridge between Asia and present day Alaska, some arrived by boat. Look in the back of the For the Love of Texas books and see the extra-long bibliography. You can feel very safe that these books were thoroughly researched (no research assistant on this project!)