Talk:International Union for Cooperation in Solar Research

Public domain pictures available of conference attendees
4th conference:
 * https://calisphere.org/item/e17b600f98b29ccc8e8f010266c8c757/
 * http://digitalcollections.ucsc.edu/digital/collection/p16019coll10/id/402/
 * https://hdl.huntington.org/digital/collection/p15150coll2/id/1124

2nd conference:
 * http://digitalcollections.ucsc.edu/digital/collection/p16019coll10/id/401/rec/2