Used with
permission of Maiken Naylor, University at Buffalo, Buffalo, NY, USA,
http://ublib.buffalo.edu/libraries/units/sel/exhibits/stamps
..Alfred Nobel
..Leo Hendrik
Baekeland
..Ernest Solvay
..Louis Pasteur
..Friedrich
Wilhelm Ostwald
..Victor Grignard
..Fritz Haber
..Walther Nernst
..Guilio Natta
..Willard Frank
Libby
..Ilya Prigogine
..William Henry
Bragg and William Lawrence Bragg