In the early 20th century, tough mercenary Fargo heads to Central America to rescue a party who has discovered a priceless treasure in John Benteen's Valley of Skulls.
Benteen (Ben Haas) was a well-regarded western writer who also wrote the Fargo series, which at first glance look like westerns but are really more "men's adventure."
This one is a little wilder than most, with the priceless treasure being a giant solid-gold cannon that Fargo finds actually comes in handy. Fargo's manly exploits start on page one--when he gets into a fight at a cockfight!--and run straight through to the last page.
I like reading a Fargo novel when I come across one, and I found this one cheap for my beloved Kindle.