U.S.A.-Entire (1894) Seal of Medical Society of New York. Two cent postal stationery (O) with illustrated corner ad. Seal depicts Eagle. Indian. Man with rope of long watch chain. (ImageA)

PERU-Proof (1902) Municipal Hygiene Institute. Imperforate block of 4 on thin paper and proof of frame on card stock in block of 4. Scott No 165, Yvert No 130. (ImageA)

RUANDA URUNDI-Entire (1928) Hospital for blacks. Illustrated postal card (N) of Belgian Congo overprinted for use in Ruanda-Urundi. Sepia photo of hospital in Lisala. Card #48 in series of 50. (ImageA)

U.S.A.-Entire (1930) Boxes of hygienic crackers* and cereal. One cent postal card with advertising. 'Grants Hygienic Crackers.' (ImageA)

FRANCE-Deluxe proof (1940) Claude Bernard. Deluxe sheet with glassine overlay. Scott No B89a. Yvert No 464. (ImageA)

FRANCE-Deluxe proof (1940) Nurse with injured children. Deluxe sheet with glassine overlay of charity issue. Scott No B103, Yvert No 465. Benefit to war victims. (ImageA)

U.S.A.-Meter cancel (1941) The Common Cold. Milk. Red meter cancellation on piece Pitney Bowes No 70261: 'Guard against colds with milk.' (ImageA)

PANAMA-Varieties/Error (1949) Roosevelt. Arosemena. Block of 4 with doubled overprint of anti-cancer surcharge. Scott No RA28, Yvert No PA106. (ImageA)

NEW CALEDONIA-Deluxe proof (1950) Doctor administering medication* Deluxe sheet. Scott No B14, Yvert No 278. (ImageA)

U.S.A.-Meter cancel (1951) Hospital for prolonged illnesses. Red meter cancellation on piece Pitney Bowes No 136889: 'Since 1884 serving the patient with prolonged illness.' (ImageA)

U.S.A.-Meter cancel (1953) Sanitation: surgical dressings. Red meter cancellation on piece Pitney Bowes No 171473: 'Curity surgical dressings for home and hospital.' (ImageA)

U.S.A.-Meter cancel (1955) Medicine. Insurance. Red meter cancellation on piece Pitney Bowes #117223: Blue Cross for hospital bills. Blue Shield for doctor bills. (ImageA)

BRAZIL-First Day Cover (1955) Adolpho Lutz. FDC with cachet and special cancel. Scott No 830. Lutz was a pioneer of Brazilian tropical medicine and infectious diseases. (ImageA)

FRANCE-Artist proof (1958) Doctor Widal. Die proof in brown signed by the engraver PHEULPIN. Scott No 866. Yvert No 1143. Bacteriologist and discoverer of typhoid serum. (ImageA)

FRANCE-Artist proof (1958) Charles Nicolle. Die proof signed by the engraver MAZELIN. Nicolle was a bacteriologist who won the Nobel Prize in medicine for identifying lice as the transmitter of typhus. Scott No 867,Yvert No 1144. (ImageA)

FRANCE-Artist proof (1958) René Leriche. Die proof signed by the engraver COTTET. Scott No 868, Yvert No 1145. Doctor who specialized in the treatment of pain. (ImageA)

FRANCE-Deluxe proof (1959) Arms* donating blood. Deluxe sheet. Scott No 931. Yvert No 1220. (ImageA)

MONACO-Trial Color Proof (1962) Arm* ready for donation. Symbol* and emblem* of Blood Donors. Trial color proof pair. Scott No 510. Yvert No 598. 3rd International Congress of Blood Donors. (ImageA)

FRANCE-Deluxe proof (1964) Dominique Larrey. Deluxe sheet. Larrey was the chief surgeon of Napoleon's armies. Scott No B386, Yvert No 1434. (ImageA)

YEMEN-Imperforate (1966) Avicenna. WHO headquarters. Imperforate minisheet. Michel Block 54. (ImageA)

DAHOMEY-Imperforate (1966) WHO Headquarters. Set of 2 corner imperforate pairs. Scott Nos 221,C32. Yvert Nos 239,PA36. (ImageA)

FRENCH ANTARCTIC-First Day Cover (1968) Caduceus. Bouquet of flowers and roses. Sun. Unaddressed FDC with cachet. Scott No 31. Yvert No 26. 20th anniversary of the World Health Organization. (ImageA)

SENEGAL-Deluxe proof (1968) Boy. WHO emblem. Set of 2 deluxe sheets. 20th anniversary. Scott Nos 308-9, Yvert Nos 313-4. (ImageA)

CENTRAL AFRICA-Artwork (1968) Man. Tsetse fly. WHO emblem. Original artwork signed by the engraver BEQUET. Pencil on tracing paper measuring 29 x 21 cm. Scott No C53, Yvert No PA56. 30th anniversary of WHO. (ImageA)

FRANCE-Deluxe proof (1969) Child throwing off crutches. Deluxe sheet. Scott No 933, Yvert No 1224. Polio vaccine. (ImageA)