IAU Symposium no 1, 1953

The International Astronomical Union's first symposium, held in Vosbergen (Groningen), Netherlands.

Conference on coordination of Galactic Research.

From left to right: Guillermo Haro, Bertil Lindblad, W. Becker, R.H. Stoy, Walter Baade, Otto Heckmann, Viktor Kourganoff, Jöran Ramberg, Jan Hendrik Oort, L. Plaut, C. Schalen, Adriaan Blaauw, W.W. Morgan, H. Spencer-Jones, Mrs. Nassau, P. Th. Oosterhoff, J.J. Nassau, P. Bok, P.J. van Rhijn, P.G. Kulikovski, B.V. Kukarkin, V.A. Ambartsumanian, P.P. Parenago and O.A. Melnikov. This image shows 24 of the 27 participants