I see that the last post on this was in January. Have you all given up?
I live just a mile or so from the old station and so the legend has sparked my interest.
First of all, Nelle Clack's testimony isn't valid. Nelle Easter Lindsay (maiden name) is a real person - and yes, she was the Super of the Mohave County School District from 1925-1929. She was also a devout Catholic. She didn't even become a Clack (of Clack's Canyon fame) until 1917 - decades after the purported robbery took place. Her husband (Greeley Horace Clack) didn't even MOVE to Arizona until 1891. So if she happened to find evidence of someone living up in Clack's canyon, it would have had to have been some random person.
Secondly, if there was a robbery, it had nothing to do with the army. The only army payroll robbery even remotely near the Cerbats took place in 1889 (the money of which, coincidentally, has yet to be found).
Also, there's no evidence in the Mohave Miner records of anything remotely similar taking place between 1870-1890.
However, that being said, there may be a tie to the 1889 army robbery and the legend. I'm still corroborating with an AZ records person to validate this, but I have the name of a man that was involved in the 1889 robbery who was taken to the Yuma prison. I don't want to just blab his name over this forum, but it is similar to the old Cerbat legend and upon confirming his sentencing details, we may find that the lost money is not near the Cerbats at all, but further south by many, many miles.
If anyone is interested in sharing information so that we can get one step closer to solving this, please let me know. The investigations cited on this forum are to be commended. I'd be very interested in speaking to some of you in further detail about this legend.