The ledger entry pretty much tells it all.
It's hard to read. At the far left in very small letters it says "P.G. Cheek piece,Check A2 Swiss Butt 30/30. At the far right is says Sergeait (?) Scott. it must be Sergeant Scott.
The serial # is 91.874. The shipping date on the ledger page says it was shipped 6/29/09 which is consistent with the serial #. I wonder what the 1907 on the plaque means? It has the dot in the serial #. We know this was dropped shortly after 90.000. It has the rounded rear bolt to frame contact area as would be expected on a post serial # 90.000 1899.