Bric-A-Bracs for the following years could not be located: 1887, 1945, 1947.

Nassaue Heralds were not published for the following years: 1945, 1948.

Freshman Heralds for the following years could not be located: 2008, 2009.

The Permanent Correspondence subseries contains correspondence between Kennan and scholars, government officials, and the general public. Most are at least one page in length and some include enclosures of copies of articles. Many of the letters contain discussions of ideas presented in articles or important current events and issues, such as Russian history and foreign policy, American foreign policy, U.S.-Soviet relations, and the arms race and nuclear disarmament. Kennan's correspondence with other scholars focused on the exchange of ideas and facts for works in progress or the analysis of recently published scholarship. Kennan also provided information about himself for others' biographical works about him or corrected their published interpretations of his opinions. Kennan's correspondence with government officials was largely concerned with his responses to their requests for advice on foreign affairs. Additionally, the subseries contains correspondence between Kennan and members of his extended family. In the correspondence, they discussed family news, planned visits, the countries Kennan was working or traveling in, and a little about his diplomatic work.

The Chronological Correspondence subseries contains brief correspondence from Kennan or his secretary to the general public, scholars, journalists, and publishers. The correspondence is in response to letters from these individuals, although copies of their letters are not present. Many of these letters are of a standard form, with the most common expressing gratitude for articles sent to Kennan, appreciation for praise about Kennan's writings and ideas, or notifying the correspondent that Kennan is out of the country. Other common subjects include brief responses to articles sent to Kennan, correspondence with Kennan's publishers about proofreading issues and logistics, responses to invitations for Kennan to speak, write or attend events (most of which were declined), travel arrangements, and providing letters of recommendation.

The Miscellaneous Correspondence subseries contains brief correspondence between Kennan or Kennan's secretary and the general public or scholars. The majority of Kennan's responses to their correspondence, which most often described their work or commented on Kennan's work, is routine in nature and provided his appreciation for invitations (generally declined), praise or papers sent to Kennan. Other correspondence concerned individuals seeking help with their research, or interviews or quotes to use in their writings. Also included are clippings, materials related to Kennan's speaking engagements and awards, travel files, correspondence about obtaining permissions to quote or publish reprints of Kennan's writings, and reprints of articles sent by the correspondents to Kennan. A few of the folders, labeled "floppies" by Kennan, contain print-outs of Kennan's outgoing correspondence. Also included is a card file for the 1958 correspondence which provides the name and address of each correspondent and a brief description of the subject of the letter.