I think its funny all of this heyday comes around the late 1800's.
Right around the time of the hand drawn maps, and correlating to the Confederate and KGC operations there.
Obviously we see Peg-Leg in the army there,
Reavis was also in the military there,
Waltz has a shotty history, and the other players that arrive afterwards who were mining and looking for the Dutchman have nothing to go by? Someone gathered up all the info and buried it to hide for themselves.
This is the point where all of the maps and all of the people just disappear from the 'original' information we have on record, and we are left with hand drawn and word of mouth rumors.?
These areas were taken from hand drawn maps and they were consolidated into a single guide, from the original Spanish Maps, and set into the stone forms, but buried and left behind?
Why would you leave stone maps to a massive set of veins? If you were the Spanish, why not give them to a resident who stayed behind.? It's obvious they are part of something else other than the Spanish.....they used leather hides and paper.
The stones which were crafted by members of the KGC in their attempt to escape from the pursuing investigations there, and they were left behind to leave a trail to find them, and the codes to find all of this information came from the Beale Papers.
The men were killed and their masters running with the gold didn't want their trail to lead to their operations !!!
Everyone was searching and mining, then when the men were lost at Massacre Point, and the investigation into the Land Grab begins, the whole valley goes silent and numerous 'legends' were given as their own reasons for chasing these mines.
These players were all involved. Peg-Leg was stationed in New Orleans?
This is all KGC at the hands of Albert Pike's Castle.
He was stationed there when both Reavis was there as well.
They may have all even served in the same group.