Contemporary histories of the Cassirers
- Die Familie Cassirer: eine bedeutende Berliner Familie The Cassirer Family: an important Berlin Family. A 17 page account of the history in German of the Breslau generation of the Cassirer Family. Author not yet identified. Copy provided by Olle Kellerman.
- Die Cassirers Article in German on the contribution of the Cassirers to Berlin from the Berlin Morgenpost 29 June 2003.
- Cassirer Family Tree by Kerstin Köhnstopp 1989. This rendition of the Cassirer genealogy by Kerstin Köhnstopp is reproduced from the book Harry Nutt, Bruno Cassirer, Stapp Verlag, Berlin, 1989. It contains some new information (and, it appears, some significant errors).
- Simplified Cassirer Descendant Chart by Olle Kellerman This is a simplified chart developed by Olle Kellerman in 1997. It is not complete.
- Origins of the name Cassirer