General view of a 1947 display board for the John Wesley Hyatt Award, presented annually by the Society of Plastics Engineers for outstanding achievement in the plastics industry. The board features profiles of several…
- Circa 1938
Portrait of chemist and prolific inventor Carleton Ellis (1876-1941) best known for his involvement in the development of margarine, polyester, anti-knock gasoline, and paint and varnish remover.
Carleton Ellis was…
- 1889 – 1891
This photogravure reproduces a painting by American artist Daniel Ridgway Knight (1839-1924), who was born in Philadelphia, Pennsylvania and also spent time in France. The photogravure was part of a massive study of…
Philatelic First Day Cover honoring American agricultural scientist and inventor George Washington Carver (1864?-1943). The envelope features an illustrated rendering of Carver and the Tuskegee Institute, as well as a…
- Artist Boll, Ken
- Creator Of Work Cachet Craft
- Subject Postage stamps, African American scientists, Inventors, Carver, George Washington, 1864?-1943, Tuskegee Institute, Commemorative postage stamps, African Americans, Science on postage stamps, Cachets (Philately), Agricultural chemistry, Botanists, First day covers (Philately)
- After 1920 – 1944
Portrait of Leo Hendrik Baekeland (1863-1944), inventor of Bakelite, the first fully synthetic plastic.
- Circa 1900
Portrait of Henry Heide (1846-1931), known in his time as the dean of American candy manufacturers. A native of Germany, Heide immigrated to the United States in 1866 and ran a retail grocery store in Pittsburgh before…