Bloch, Albert To Frederick Zimmermann, Lawrence, Kansas, 3 Nov 1954-21 June 1957 Rare Book & Manuscript Library Frederick Zimmermann papers, 1933-1959Series I: Cataloged Corrrespondence
Bloch, Anna Francis To Frederick Zimmermann, Lawrence, Kansas, 22 Nov-16 Dec 1954 Rare Book & Manuscript Library Frederick Zimmermann papers, 1933-1959Series I: Cataloged Corrrespondence
Burliuk, David and Mary To Curt Valentine Gallery, Brandenton, Florida, 27 Dec 1954 Rare Book & Manuscript Library Frederick Zimmermann papers, 1933-1959Series I: Cataloged Corrrespondence
Capendonk, Heinrich To Mrs. Quappi Beckmann, Amsterdam, 29 Oct 7 Nov 1954 Rare Book & Manuscript Library Frederick Zimmermann papers, 1933-1959Series I: Cataloged Corrrespondence
Curt Valentin Gallery Der Blaue Reiter Exhibition Catalog and related material, New York, 1954-1955 Rare Book & Manuscript Library Frederick Zimmermann papers, 1933-1959Series II: Clippings, Photographs and Printed Material
Flannagan, John B. Attribution to Curt Valentin of the right of reproduction of his works of sculpture, New York, 11 June 1941 Rare Book & Manuscript Library Frederick Zimmermann papers, 1933-1959Series I: Cataloged Corrrespondence
Flannagan, John B. Re his sculpture Rare Book & Manuscript Library Frederick Zimmermann papers, 1933-1959Series II: Clippings, Photographs and Printed Material
Flannagan, John B. To Curt Valentin, Boston and New York, Jan-Sept 1941 Rare Book & Manuscript Library Frederick Zimmermann papers, 1933-1959Series I: Cataloged Corrrespondence
Grosz, Eva To Dorothy and Frederick Zimmermann, Douglaston, New York and Berlin, 1946 1947 1960 Rare Book & Manuscript Library Frederick Zimmermann papers, 1933-1959Series I: Cataloged Corrrespondence