That's the one. I get confused over titles I have read so much over the years that Titles are mean nothing.
I generally have to read the first chapter of a book to see if I haven't read it before. I have 500 books in my library despite giving them to anyone who has an interest.
I had a book written by a man who followed the path, on horseback, that Cortez ( I think) took across Mexico and New Mexico. I bought it at one of the Spanish Missions in San Antonio.
I loaned it to someone who failed to give it back to me and I forgot who that person was.