https://www.newspapers.com/article/the-raleigh-register-the-great-train-rob/6713567/

This is a mail train/car robbery reported Oct 19, 1850

https://www.newspapers.com/article/lancaster-intelligencer-1857-09-01-jacob/34193267/
1857 in PA where goods were stolen.

https://www.newspapers.com/article/new-york-tribune-laben-manningtrain-r/128515290/
Oct 1851 attempt to rob a payroll

Then there is this one in 1851 referring to a Gold Train Robbery
Broke Jail —Twenty-one prisoners, among whom were several of those connected with the Gold Train Robbery, broke out of jail at Panama, on the 18th ult. Two of tbem were caught..
The New Orleans Crescent. (November 5, 1851). Gold Train Robbery. Newspapers.com. Retrieved February 11, 2024, from https://www.newspapers.com/article/the-new-orleans-crescent-gold-trai-robbe/140728578/