image is a derivative work of the following images: File:Hudson_River_West_Point_Plain.JPG licensed with PD-self 2008-12-10T04:23:07Z Ahodges7 3456x2592
English WestPoint (No. 16 of The Hudson River Portfolio), print, John Hill, after William Guy Wall (MET, 54.90.1274(16)) determination method or standard: