Correspondence of Bern and Ronny Schwartz, and a small amount of correspondence of their son, Michael Schwartz. Includes letters and enclosures, telegrams, greeting cards, invitations, and memoranda. The incoming correspondence is mostly original and is found with photocopies of outgoing correspondence made by Ronny Schwartz or her secretaries.

The nature of the correspondence varies from professional to personal and social. In addition to portrait sitters, other correspondents include museum and gallery staff, publishing houses, and friends and family members.