Samuel Pierpont Langley
1903 · Good
€20
Frederik Carel Gerretson
1927 · Good · NL
€70
Philip B. Hawk, Hawk, Philip Bovier
1920 · Very good
€40
H. G. Wells
1912 · Very good
€45
Martin Klopstock
1911 · Good
€35
H. G. Wells
1906 · Fair
€30
Arthur A. Noyes
1935 · Good
€20
William James
1935 · Fair
€15
John Tyndall
1904 · Fair
€20
Florian Cajori
1929 · Good
€65
Balfour Stewart
1919 · Good
€20
William James
1934 · Fair
€65
University of Chicago.
1904 · Good
€30
Henry Paul Talbot
1932 · Fine
€55
E. T. Whittaker, Sir William McCrae
1906 · Good
€35
E. T. Whittaker
1920 · Good
€25
Emanuel Hannak
1911 · Very good · NL
€25
Herbert E. Cobb
1935 · Very good
€30
William Cecil Dampier
1930 · Very good
€60
Carl David Tolmé Runge
1916 · Fine
€50
Arthur Clutton-Brock
1935 · Good
€20
E. T. Whittaker, G. N. Watson
1920 · Fine
€75
Cassius Jackson Keyser
1935 · Good
€50
Moritz Schlick
1928 · Good
€55
Steven S. Zumdahl
1907 · Very good
€25
Charles Benedict Davenport
1935 · Fair
€45
Samuel Schmucker Sadtler
1935 · Very good
€45