Cover The Metropolitan Museum of Art
Page facing inside The “Horsehead” Nebula in Orion. Hale
cover Observatories.
Author’s Photo Jay K. Klein
Contents page & Lick Observatory
page 4
Page
7 New York Public Library
9 From _Discovery of the Elements_, Mary E. Weeks,
Chemical Education Publishing Company, 1968.
12 Library of Congress
15 Sir George Thomson
18 Burndy Library
19 New York Public Library
21 Copyright © 1965 by Barbara Lovett Cline,
reprinted from her volume _The Questioners:
Physicists and the Quantum Theory_ by permission
of Thomas Y. Crowell Company, Inc., New York.
22 & 23 Curie Foundation, Institute of Radium
26 Academic Press, Inc.
29 Van Nostrand Reinhold Company
31 Top, Nobel Institute; bottom, from _Discovery of
the Elements_, Mary E. Weeks, Chemical Education
Publishing Company, 1968.
32 From _Discovery of the Elements_, Mary E. Weeks,
Chemical Education Publishing Company, 1968.
34 Top, Nobel Institute; bottom, Niels Bohr
Institute.
36, 42, 44, & 45 Nobel Institute
48 Academic Press, Inc.
49 From _Discovery of the Elements_, Mary E. Weeks,
Chemical Education Publishing Company, 1968.
60 Curie Foundation, Institute of Radium
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