E. O. Hulburt
Phys. Rev. 18, 165 (1921) - Published 1 September, 1921
F. R. Watson and L. B. Ham
Phys. Rev. 18, 178 (1921) - Published 1 September, 1921
P. J. Nolan
Phys. Rev. 18, 185 (1921) - Published 1 September, 1921
J. M. Benade
Phys. Rev. 18, 199 (1921) - Published 1 September, 1921
Willard Gardner
Phys. Rev. 18, 206 (1921) - Published 1 September, 1921
H. Kahler
Phys. Rev. 18, 210 (1921) - Published 1 September, 1921
D. Coster
Phys. Rev. 18, 218 (1921) - Published 1 September, 1921
Lewis R. Koller
Phys. Rev. 18, 221 (1921) - Published 1 September, 1921
R. A. Millikan
Phys. Rev. 18, 236 (1921) - Published 1 September, 1921
Mary R. Andrews
Phys. Rev. 18, 245 (1921) - Published 1 September, 1921