EVB2936423: Exterior of Hotel-Dieu, Paris, with nuns at the doors, receiving a patient on a stretcher. 19th century wood engraving after painting in 'Le Livre de Vie Active de l'Hotel Dieu', c.1482 / Bridgeman Images

EVB2936428: Diphtheria antitoxin was made by inoculating horses with diphtheria bacteria, then bleeding the animals to obtain their blood serum. The serum neutralized the diphtheria toxin causing the patient’s symptoms / Bridgeman Images

EVB2936433: A woman lying on a bed is being restrained by two male assistants while the surgeon extracts the infant during a Cesarean section. The operation was fatal to most women, with the first recorded maternal survival of 25 days after the operation occurring in 1605. Italian print from 1601 / Bridgeman Images

EVB2936440: A pregnant woman sitting in a birthing chair is being attended to by three midwives, one ready to receive the baby, the second standing behind the chair, and the third standing at the woman's side comforting her. Implements are on a table in background. Engraving from Swiss physician, Jakob Rueff's, THE CONCEPTION AND GROWTH OF MAN, 1580 / Bridgeman Images

EVB2936441: Standing obstetrical examination as illustrated in the 1822 medical classic Nouvelles Demonstrations D'ACCOUCHEMENS (DEMONSTRATION OF NEW OBSTETRICS) by Jacques Pierre Maygrier (1771-1835) . The physician depicted is thought to be a portrait of Maygrier himself / Bridgeman Images

EVB2936445: Man walking with a noise maker called a leper's clapper or beggar's clapper, used in the European middle ages to warn others of the approach of a victim of a contagious disease / Bridgeman Images

EVB2936446: Public health education in Red China, 1957 (poster) / Bridgeman Images

EVB2936457: Daguerreotype believed to be a re-enactment of the first demonstration of ether anesthesia by Dr. William T.G. Morton at Massachusetts General Hospital on October 16, 1846 / Bridgeman Images

EVB2936463: Patient having a cataract removed from his left eye by a surgeon whose assistant immobilizing the patient. Woodcut from OPHTHALMODOULEIA DAS IST AUGENDIENST, a 1583 book by Georg Bartisch (1535-1607) / Bridgeman Images

EVB2936465: Heart surgery performed in the 1950s / Bridgeman Images

EVB2936467: Fully dressed female patient lying on the operating table, surrounded by the surgeons of Massachusetts General Hospital in one of the earliest operations performed under ether anesthesia. Among the surgeons is Dr. John Collins Warren, the doctor who first demonstrated surgical anesthesia / Bridgeman Images

EVB2936469: Ambroise Pare, the great 16th century surgeon, operating on a soldier wounded in battle. Pare developed surgical techniques and invented instruments for battlefield operations, and is considered a great medical innovator. c. 1550 / Bridgeman Images

EVB2936473: CAT (computer-aided tomography) scan being performed on a patient at the National Institute of Health, Bethesda, Maryland. 1987 / Bridgeman Images

EVB2936474: Fever Bag of the 17th century. At top a women prepares to pour cold water in to the bag at the patient's neck, which will cool the fevered patient before it empties in the a bucket at the foot of the bed. European engraving of 1672 / Bridgeman Images

EVB2936488: Title page to the treatise on urine analysis in the late medieval book, HORTUS SANITATIS (Origin of Health). The book describes herbal remedies and cites the works of Galen, Albertus Magnus and Dioscorides. 1491 woodcut / Bridgeman Images

EVB2936493: Wounded U.S. soldier receives blood plasma while lying on a stretcher in a street in Sicily during World War II. Behind the medic, barefoot Sicilian civilians watch. 1943 / Bridgeman Images

EVB2936312: Jim Ryun (b. 1947), winning the 1966 Baxter Mile in the New York Athletic Club indoor games at Madison Square Garden. In 1966, Ryun set world records in the mile and the half-mile runs / Bridgeman Images

EVB2936313: Radar set SCR-268, used for controlling anti-aircraft gunfire, operated by a five man crew in Italy during World War II / Bridgeman Images

EVB2936322: Louis Bleriot was the first man to fly the English Channel, winning the £1,000 prize offered by the London Daily Mail. Bleriot became a successful airplane manufacturer, specializing in monoplanes / Bridgeman Images

EVB2936326: Wilbur Wright pilots a glider during Wright Brothers' flight experiments at Kitty Hawk, North Carolina. c. 1902 / Bridgeman Images

EVB2936330: The John Bull locomotive was a is a British-built railroad steam engine that operated in the United States, from 1831 to 1866. It was built by Robert Stephenson and Company and operated for the Camden and Amboy Railroad, the first railroad in New Jersey / Bridgeman Images

EVB2936333: 'William Crooks' a 1861 locomotive of the Great Northern Railway with tender and cars. The tender is a special car to carry fuel and water to keep the locomotive running / Bridgeman Images

EVB2936335: Fremont Street in Las Vegas, Nevada, before the construction of Hoover Dam, Lake Mead and legalized gambling. c. 1920 / Bridgeman Images

EVB2936338: The reconstructed James Forte at the Jamestown Festival Park, in 1957, the year of the 350th anniversary of the establishment of the colony by the Virginia Company of London / Bridgeman Images

EVB2936348: Front and back views of a human figure with numerous acupuncture points and meridians identified. Between the figures, but not to scale, are three acupuncture needles. Illustration from a 1825 French book on Chinese acupuncture by Jean Baptiste Sarlandiere / Bridgeman Images

EVB2936360: Pottsville, PA view from Sharp Mountain. 1833 / Bridgeman Images

EVB2936367: Daguerreotype of No. 46 to No. 52, Chestnut Street, Philadelphia, Pennsylvania 1843 / Bridgeman Images

EVB2936371: Model for acupuncture, an engraving from GRANDEUR AND SUPREMACY OF PEKING, by Alphonse Hubrecht, 1928. Engraving / Bridgeman Images

EVB2936373: 16th century scene of therapeutic bathing and cupping. A man and a woman in a sauna, soaking their feet in water, with a child and physician. Application on small glass cups on their skin increases local blood flow. 1565 woodcut from Paracelsus's, OPUS CHYRURGICUM / Bridgeman Images

EVB2936380: Joseph Merrick (1862-1890), known as the 'Elephant Man', suffered from Neurofibromatosis, a congenital disorder. Standing profile engravings of Merrick were published in the British Medical Journal in 1886. He was portrayed by John Hurt in the 1980 film THE ELEPHANT MAN / Bridgeman Images

EVB2936385: Korean Siamese twins standing with hands on each others' shoulders. 1903 / Bridgeman Images

EVB2936388: Physicians attending at bedside of dying man covered with sores. In the lower foreground are medical instruments. 1565 woodcut from Paracelsus's, OPUS CHYRURGICUM / Bridgeman Images

EVB2936391: Sir William Osler (1849 – 1919), reading a patient's chart at bedside as a nurse watches. Osler was the first professor of medicine at John Hopkins University Medical School and created the modern model for medical training based on clinical training. Photo c. 1903 / Bridgeman Images

EVB2936116: President Calvin Coolidge (1872-33), wearing a black mourning armband, two days after the sudden death of President Warren Harding on Aug. 2, 1923 / Bridgeman Images

EVB2936122: Campaign banner for 1864 Republican presidential candidate Abraham Lincoln and running mate Andrew Johnson. Johnson was the only Southern Senator not to join the Confederacy / Bridgeman Images

EVB2936126: Panoramic scene of Woodrow Wilson's (1856-1924), second inauguration as President on March 5th, 1917 / Bridgeman Images