(1899–1977). A distinguished American chemist, Fieser became professor of organic chemistry at Harvard in 1930 after teaching for several years at Bryn Mawr. He achieved the synthesis of vitamin K1 and did fundamental research on cortisone, the chemistry of steroids, and aromatic carcinogens. His achievements as a chemist and educator are recognized throughout the world. Unique in his facility in laboratory demonstration and as a lecturer and author, he exemplified that rare combination of a great teacher and a profound scholar.