Free wheel chairs lined in a hallway image, public domain hospital CC0 photo. https://www.rawpixel.com/image/5925168/photo-image-light-public-domain-greenFree Image from public domain licenseNurse training. A nurse gives this weak infant its meal through the Gavage method. Sourced from the Library of Congress. https://www.rawpixel.com/image/12240958/photo-image-face-hand-personFree Image from public domain licenseNo chances are taken with the quality of wheel castings for the Army's new halftrac scout cars. This workman in an Ohio… https://www.rawpixel.com/image/12240064/photo-image-plant-person-artFree Image from public domain licenseArrangement of Six Leaves (Sunlight Test of Fixing) by William Henry Fox Talbot https://www.rawpixel.com/image/14275922/arrangement-six-leaves-sunlight-test-fixing-william-henry-fox-talbotFree Image from public domain licenseTetradrachm (Coin) Portraying King Ptolemy I by Ancient Greek https://www.rawpixel.com/image/9011907/tetradrachm-coin-portraying-king-ptolemy-ancient-greekFree Image from public domain licenseSteam bath on Cheyenne Indian Tongue River Reservation. A hot fire is made in the center, bricks are heated, water is poured… https://www.rawpixel.com/image/12332624/image-steam-person-medicineFree Image from public domain licenseSteam bath on Cheyenne Indian Tongue River Reservation. A hot fire is made in the center, bricks are heated, water is poured… https://www.rawpixel.com/image/12332421/image-dog-steam-plantFree Image from public domain licenseNurse training. Too weak to be fed by normal methods, this infant is given his dinner by eye dropper. Sourced from the… https://www.rawpixel.com/image/12308455/image-face-person-eyeFree Image from public domain license