Philadelphia, Pennsylvania. Back yard of an abandoned house at 20th and Arch Streets. Sourced from the Library of Congress. https://www.rawpixel.com/image/12297870/photo-image-plant-public-domain-wallFree Image from public domain licenseSkunk cabbage, ferns and alders keep this farmer in the hills hard at work as he attempts to clear an abandoned homestead.… https://www.rawpixel.com/image/12268876/photo-image-plant-person-skyFree Image from public domain licenseBear Mountain, New York. Interracial activities at Camp Fern Rock, where children are aided by the Methodist Camp Service… https://www.rawpixel.com/image/12296164/photo-image-face-plant-personFree Image from public domain licenseBear Mountain, New York. Interracial activities at Camp Fern Rock, where children are aided by the Methodist Camp Service.… https://www.rawpixel.com/image/12296173/photo-image-plant-person-treeFree Image from public domain licenseA farm that has been cut over and allowed to become covered with ferns near Mapleton, Oregon. Sourced from the Library of… https://www.rawpixel.com/image/12267588/photo-image-plant-grass-skyFree Image from public domain license