Other Open Access
Archival notes from Archiv der Max-Planck-Gesellschaft zu Berlin, Abteilung III, Repositur 103.
Jacob Giltaij: Documents from the Nachlass Helmut Coing at the Archiv der Max-Planck-Gesellschaft in Berlin.
Kaius Tuori: The papers of Coing beginning from 1963, when he was selected director of the MPIeR. Papers were handed over to the archive between 2010-2012. Contains his unpublished autobiography.
Max-Planck-Gesellschaft, Berlin_NL Coing III 103 _Jacob Giltaij.pdf
Max-Planck-Gesellschaft, Berlin_NL Coing III 103 _Kaius Tuori.pdf