
While researching, I came across this photo of the 1911 Psychanalitic Congress, and of course immediately thought of the 1927 Solvay Conference photo:

Middle Row: P. Debye, M. Knudsen, W.L. Bragg, H.A. Kramers, P.A.M. Dirac, A.H. Compton, L. de Broglie, M. Born, N. Bohr;
Front Row: I. Langmuir, M. Planck, M. Curie, H.A. Lorentz, A. Einstein, P. Langevin, Ch.-E. Guye, C.T.R. Wilson, O.W. Richardson
And then I was sad.
Dammit, I don’t want percentage of women in a field to be an effective proxy for intellectual rigor.
(But I do really want a copy of the Solvay photo for my living room wall.)