Glen Creek shimmers in the evening sunlight by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038342/photo-image-tree-plant-summerFree Image from public domain licenseSkiers in Gardners Hole near Indian Creek by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4226066/photo-image-public-domain-tree-plantFree Image from public domain licenseView of the Petersburg Gas Works by Timothy H O Sullivan and Alexander Gardner https://www.rawpixel.com/image/14325912/view-the-petersburg-gas-works-timothy-sullivan-and-alexander-gardnerFree Image from public domain license