Raccoon, Procyon lotor, a vector in the transmission of rabies to humans and other animals. Original image sourced from US… https://www.rawpixel.com/image/2288472/free-photo-image-fox-animal-animals-public-domainFree Image from public domain licenseA female, Aedes aegypti mosquito obtaining a blood meal from a human host. Original image sourced from US Government… https://www.rawpixel.com/image/2288489/free-photo-image-mosquito-aedes-aegyptiFree Image from public domain licenseA ruby–colored glass ashtray contained three used cigarette butts along with their ashes. https://www.rawpixel.com/image/2282550/free-photo-image-smoking-cigarette-addictionFree Image from public domain licenseYosemite Valley, California is located on the western slope of the Sierra Nevada mountains, 150 miles (240 km) due east of… https://www.rawpixel.com/image/421750/free-photo-image-mount-carol-californiaFree Image from public domain licenseAn Indian woman collecting water from one of the town’s wells, that happened to be situated adjacent to this… https://www.rawpixel.com/image/2288495/free-photo-image-india-woman-water-wellFree Image from public domain licenseCDC’s Atlanta Quarantine Station staff working with public health partners Original image sourced from US Government… https://www.rawpixel.com/image/2288554/free-photo-image-covid-emergency-awarenessFree Image from public domain licenseFootball pitch background design https://www.rawpixel.com/image/11983570/football-pitch-background-designView licenseNeon sign for Billy Bob's legendary “boot-scootin’”western nighclub and honky-tonk bar in Fort Worth.… https://www.rawpixel.com/image/582695/carol-highsmiths-texas-photographFree Image from public domain licenseNASA's Boeing 747SP SOFIA airborne observatory soars over a bed of puffy clouds during its second checkout flight over the… https://www.rawpixel.com/image/440759/free-photo-image-plane-airplane-shipFree Image from public domain licenseChimpanzee at the North Carolina Zoological Park in Asheboro, North Carolina. Original image from Carol M. Highsmith’s… https://www.rawpixel.com/image/422096/free-photo-image-monkey-public-domain-chimpFree Image from public domain licenseRustic cabin associated with the nearby Mast Farm Inn, and decorated with pumpkins for the fall season, in Valle Crucis… https://www.rawpixel.com/image/434610/free-photo-image-carol-highsmith-farm-americaFree Image from public domain licenseSpring Break by Jim Sinclair/USFWS, Tamarac National Wildlife Refuge Photo Contest 2013Original public domain image from… https://www.rawpixel.com/image/4029099/photo-image-tree-ocean-plantFree Image from public domain licenseAtlantis on Approach to ISS during the STS-132 Mission, 16 May 2010. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440783/free-photo-image-may-atlantis-space-shuttleFree Image from public domain licenseA great horned owl has asserted permanent visiting rights to a tree above the ranch headquarters at the Big Creek cattle… https://www.rawpixel.com/image/582740/carol-highsmiths-wyoming-photographFree Image from public domain licenseU.S. Air Force Master Sgt. Eric Jones, boom operator assigned to the 134th Air Refueling Wing, Tennessee Air National Guard… https://www.rawpixel.com/image/3319527/free-photo-image-134th-air-refueling-wing-35th-fighter-aircraftFree Image from public domain licenseMarion Street, French section, west side of river, Amoskeag, Manchester, New Hampshire. Sourced from the Library of Congress. https://www.rawpixel.com/image/12242042/photo-image-person-public-domain-kidFree Image from public domain licenseThe space shuttle Atlantis is seen shortly after the rotating service structure (RSS) was rolled back at launch pad 39a… https://www.rawpixel.com/image/440696/free-photo-image-nasa-astronaut-spacecraftFree Image from public domain licenseWith landing gear down, space shuttle Endeavour nears touchdown on Runway 15 at the Shuttle Landing Facility at NASA's… https://www.rawpixel.com/image/441379/free-photo-image-space-shuttle-aircraft-carrierFree Image from public domain licenseAn old hotel building at Dover(?), smalltown Georgia. Sourced from the Library of Congress. https://www.rawpixel.com/image/12240709/photo-image-face-paper-personFree Image from public domain licenseEbony Jewelwing Damselfly on green leaf. Original public domain image from Flickr https://www.rawpixel.com/image/4028923/photo-image-nature-dragonflyFree Image from public domain licenseFootball pitch background design https://www.rawpixel.com/image/11983551/football-pitch-background-designView license[Untitled photo, possibly related to: Ex-slave mulatto woman in northern Greene County, Georgia]. Sourced from the Library… https://www.rawpixel.com/image/12240993/photo-image-face-person-smokeFree Image from public domain licenseCannons at an artillery park, Pennsylvania. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/3090964/free-photo-image-america-artillery-park-cannonsFree Image from public domain licenseChurch and River from Memorial, Stratford-on-Avon, England. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7652927/photo-image-vintage-art-public-domainFree Image from public domain licenseChild of rehabilitation client, Jackson County, Ohio. Sourced from the Library of Congress. https://www.rawpixel.com/image/12241792/photo-image-face-cat-personFree Image from public domain licensePink fireworks background design https://www.rawpixel.com/image/11929571/pink-fireworks-background-designView license[Untitled photo, possibly related to: Farm laborer working in the sugar fields near Yauco, Puerto Rico]. Sourced from the… https://www.rawpixel.com/image/12240742/photo-image-face-plant-personFree Image from public domain license[Untitled photo, possibly related to: In front of post office, Benton Harbor, Michigan]. Sourced from the Library of… https://www.rawpixel.com/image/12240759/photo-image-face-hand-personFree Image from public domain license[Untitled photo, possibly related to: Cattle of Iowa corn farm, Grundy County, Iowa]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12240758/photo-image-plant-people-grassFree Image from public domain licenseManager of Farmer's Union Coop elevator in his office. This cooperative received a loan from the FSA (Farm Security… https://www.rawpixel.com/image/12240831/photo-image-face-person-public-domainFree Image from public domain license[Untitled photo, possibly related to: Pawn shop and secondhand clothing store on Beale Street, Memphis, Tennessee]. Sourced… https://www.rawpixel.com/image/12240975/photo-image-face-person-shirtFree Image from public domain licenseThe 1950s historical photograph of an extreme air pollution event at Salt Lake City, Utah. Original image sourced from US… https://www.rawpixel.com/image/2288462/free-photo-image-street-vintage-smogFree Image from public domain licenseAerial view of New York City, in which the World Trade Center Twin Towers is prominent. Original image from Carol M.… https://www.rawpixel.com/image/421944/free-photo-image-skyline-new-york-architectureFree Image from public domain licenseAn example of acute necrotizing ulcerative gingivitis, also known as trench mouth. Original image sourced from US Government… https://www.rawpixel.com/image/2288464/free-photo-image-teeth-mouth-gingivitisFree Image from public domain licenseKaylei Weed, her sons Earl Lebeau (left) and Baptiste Lebeau, and her mother, Elaine Ethel Weed, are members of the Eastern… https://www.rawpixel.com/image/582761/carol-highsmiths-wyoming-photographFree Image from public domain licensePembroke Welsh Corgi standing on grass ground. Original public domain image from Flickr https://www.rawpixel.com/image/4024964/photo-image-plant-dog-grassFree Image from public domain licenseThe rugged landscape of the Canary Islands. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440194/free-photo-image-africa-canary-islands-nasaFree Image from public domain licenseNight view of Sochi, Russia during Olympics. Feb 10th, 2014. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440134/free-photo-image-milky-way-sochi-night-lightFree Image from public domain licensePenned cattle undergoing an inspection for signs of central nervous system disorders. Original image sourced from US… https://www.rawpixel.com/image/2288453/free-photo-image-cow-cattle-animalFree Image from public domain licenseTwo parasol mushrooms (Lepiota procera) and a shaggy parasol mushroom (Lepiota rhacodes). Watercolour, 1898. https://www.rawpixel.com/image/13957285/image-plant-watercolour-black-backgroundFree Image from public domain licenseRaccoon, Procyon lotor, a vector in the transmission of rabies to humans and other animals. Original image sourced from US… https://www.rawpixel.com/image/2288474/free-photo-image-raccoon-vector-animalFree Image from public domain licenseElk at the U.S. Fish & Wildlife Service's elk refuge in Jackson Hole, Wyoming, a valley on the edge of Grand Teton National… https://www.rawpixel.com/image/434448/free-photo-image-elk-snow-winterFree Image from public domain licenseFall scene on a stretch of roadway along the southern reaches of the Blue Ridge Parkway, near Blowing Rock, North Carolina. https://www.rawpixel.com/image/434611/free-photo-image-road-autumn-trees-sceneFree Image from public domain licenseHamilton Watch. Turret head operation - semi-skilled machine operation by which drilling, counter-sinking, facing and… https://www.rawpixel.com/image/8769970/photo-image-face-vintage-womanFree Image from public domain licenseFree Border Collie running, holding toy image, public domain dog CC0 photo. https://www.rawpixel.com/image/5912599/photo-image-background-public-domain-dogFree Image from public domain licenseFree playing guitar image, public domain musical instrument CC0 photo. https://www.rawpixel.com/image/5906285/photo-image-public-domain-wooden-living-roomFree Image from public domain licenseFree Sheikh Zayed Grand Mosque, Dubai image, public domain travel CC0 photo. https://www.rawpixel.com/image/5914663/photo-image-public-domain-free-cityFree Image from public domain licenseIntestine showing the spontaneous cure of intussusception of the gut https://www.rawpixel.com/image/13956079/intestine-showing-the-spontaneous-cure-intussusception-the-gutFree Image from public domain licenseSandhill crane in flightTamarac National Wildlife Refuge Photo Contest 2013Photo by Jim Sinclair/USFWS. Original public… https://www.rawpixel.com/image/4029103/photo-image-plant-bird-summerFree Image from public domain licenseBull elk in Yellowstone National Park, in the northwest corner of the western state of Wyoming. Original image from Carol M.… https://www.rawpixel.com/image/434424/free-photo-image-yellowstone-carol-highsmith-national-parkFree Image from public domain licenseN. Dubois de Chémant demonstrating his own and a woman's false teeth to a prospective male patient with disordered teeth.… https://www.rawpixel.com/image/13962801/image-cartoon-face-personFree Image from public domain licenseVisitor center neon sign in Tunica, Mississippi. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/3090969/free-photo-image-music-night-americaFree Image from public domain licenseNewsboys and newsgirl. Getting afternoon papers. New York City, July 1910. Photographer: Hine, Lewis. Original public domain… https://www.rawpixel.com/image/8770010/photo-image-vintage-kid-manFree Image from public domain licenseLegionnaire falls after picnic bench breaks at American Legion fish fry, Oldham County, Post 39, near Louisville, Kentucky… https://www.rawpixel.com/image/12109068/image-plant-people-grassFree Image from public domain licenseGracie Clark, Spinner, With Her Family, Hunstville, Alabama by Lewis W Hine https://www.rawpixel.com/image/14249786/gracie-clark-spinner-with-her-family-hunstville-alabama-lewis-hineFree Image from public domain licenseLeopold's Ice Cream Shop in Savannah, Georgia. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/3092251/free-photo-image-america-carol-highsmithFree Image from public domain licenseNew York City's Grand Central Station Interior. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/3092229/free-photo-image-new-york-grand-central-interior-stationFree Image from public domain licenseCliffs of Capitol Reef National Park, Utah. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/3090985/free-photo-image-desert-capitol-reef-park-americaFree Image from public domain license[Untitled photo, possibly related to: Spanish-American women plastering adobe house, Chamisal, New Mexico] by Russell Lee https://www.rawpixel.com/image/12109352/image-face-hand-personFree Image from public domain licenseRemnants of building deposited by 1937 flood in New Madrid Bird's Point Fuse Plug Levee District by Russell Lee https://www.rawpixel.com/image/12107987/image-art-sky-vintageFree Image from public domain licenseFire burning at night on the sand with piles of logs next to it. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3302950/free-photo-image-beach-images-pictures-bonfire-campfireFree Image from public domain licenseChildren swinging on maypole, La Forge, Missouri. Project school at Southeast Missouri Farms by Russell Lee https://www.rawpixel.com/image/12108384/image-face-people-artFree Image from public domain licenseA scientist using a whole genome DNA sequencer, in order to determine the “DNA fingerprint” of a specific… https://www.rawpixel.com/image/2288531/free-photo-image-dna-scientist-lab-scienceFree Image from public domain license