Birds in Air 1880: 40.037875, -76.305514

Birds in Air 1870: 40.453132, -78.384223

Birds in Air 1845: 42.407211, -71.382437

Birds in Air 1880: 40.058324, -74.405661

Birds in Air 1880: 41.141472, -73.357905

Birds in Air 1870: 41.203322, -77.194525

Birds in Air 1830: 42.633959, -73.059082

Birds in Air 1880: 41.112469, -75.454102

Birds in Air 1850: 39.951859, -77.772217