Correspondence relating to Simon's contribution to 'Handbuch der Physik' and further correspondence with the Akademische Verlagsgesellschaft Co. Simon contributed a paper to the 'Handbuch der Physik' in 1926, entitled 'Die Bestimmung der freien Energie'. Simon carried out editorial work for the publishers Akademische Verlagsgesellschaft Co File includes index to each individual letter. 1924-1937