The documents and letters were collected by Ernst Tritsch and his wife, Sophie. Sophie Tritsch sent them to the United States Holocaust Memorial Museum in May 1988, and they were transferred to the USHRIA in Aug. 1993.

http://lod.ehri-project-test.eu/acquisitions/us-005578-irn500347-eng-irn500347_eng an entity of type: Activity

The documents and letters were collected by Ernst Tritsch and his wife, Sophie. Sophie Tritsch sent them to the United States Holocaust Memorial Museum in May 1988, and they were transferred to the USHRIA in Aug. 1993. 
Acquisition 

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