An important
contribution was made by the Getty Research Institute
directed by Thomas W. Gaehtgens.Thanks
to careful study of documents, letters and photographs related
to Szeemann and the 1969 show — carried out by the Fondazione Prada in collaboration with GRI curator Glenn Phillips and his team — and
to detailed analysis of a collection of more than 1,000 black and white and color photographs, it was possible
to identify both the works in the
exhibition and the ones that were not put on display — for technical reasons — at the Kunsthalle or in the secondary
exhibition space at the Schulwarte.The result was a complete and precise mapping of what happened in Bern.