1913 Isthmian Baseball Champions Trophy

I found this 1913 Baseball trophy it is from the Isthmain Baseball league the piece has the name R.J. Adams engraved on it. I have done research on the piece and the only information I was able to find was that the Isthmain baseball league was formed from the locals that were building the Panama Canal. They played teams that were formed from the military men sent to help with the building. Any information on the league or the player R.J. Adams would be helpful, Thanks!