He helped put together the unpublished correspondence of Toulouse-Lautrec, which he edited with Herbert Schimmel in a volume published in 1969.

This edition includes a new biographic preface and previously unpublished correspondence.

In his unpublished correspondence there are four references.

In the 1950s Besterman began to concentrate on collecting, translating and publishing the writings of Voltaire, including much previously unpublished correspondence.

Martin allowed Sounes access to 27 years' worth of unpublished correspondence between him and the poet.

One discovery is unpublished correspondence between Cheever and Ellison, who met at the project.

Correspondence Inédite (1865-1904, unpublished correspondence, 1929)

Moorehead's biography, drawing on a trove of previously unpublished correspondence, captures the rhythm of the radical contrasts in her subject's life.

Italian copyright law mandates that unpublished personal correspondence and memoirs may not be communicated to the public without the consent of the author and addressee (where appropriate).

The unpublished correspondence became the biographer's primary research source, nearly 8,000 letters, written almost daily over 43 years.