Chiefly programs, articles, minutes, correspondence, and other materials from academic conferences McKenzie attended or helped organize, both domestically and abroad. Includes some bound volumes, mostly from the 1960s, with every paper given at a particular conference. The largest amount of material comes from the 1988 Value and Capital Conference, which includes correspondence with various contributors as well as paper manuscripts for publication. Some folders include materials from non-conference related activies that occurred while McKenzie attended conferences, chiefly concert programs, maps, receipts, travel plans, and other materials. Folders are organized chronologically by year (and month, when possible).

Mainly professional correspondence, including letters of recommendation, comments on manuscripts, advising exchanges, and topics in economics. Much of the correspondence is routine, dealing with article submissions, publication issues, recommendations, and activies relating to the Department of Economics at the University of Rochester; however, there are some intellectual exchanges and article revisions and commentaries in the series. Important topics in economics include optimal growth, turnpike theorem, general equilibrium, and Von Neumann models. Correspondents of note include Kenneth Arrow, Gerard Debreu, David Gale, Tjalling Koopmans, Paul Samuelson, and Robert Solow. There are smaller amounts of topic-specific correspondence in the Research and Writings, Conferences, and Organizations Series.

The series is organized chronologically at the folder level, with original folder titles retained. Within folders, the organization varies from year to year: from 1948 to 1957, items are roughly chronological by date; from 1957 to 1981, items are separated into incoming and outgoing correspondence, organized alphabetically by sender and recipient, respectively; from 1981 to 1994, items are in reverse chronological order by date within folders; from 1994 to 2002, items are in very rough chronological order.

Contains lecture notes, reading lists, class notes, exams, and other materials from throughout McKenzie's teaching career, with an emphasis on his courses at the University of Rochester. The bulk of the material is for his seminar on general equilibrium theory, including multiple versions of his handwritten text for the course. Series organized alphabetically by folder title.

Consists of correspondence, papers, minutes, member lists, fellowship applications, and other written material related to national and international organizations with which McKenzie was involved. The bulk of the material relates to the Econometric Society, of which McKenzie was president in 1977, and the Mathematical Social Sciences Board, which he chaired from 1968 to 1970. Also included are records documenting McKenzie's involvement with American Academy of Arts and Sciences, the American Economic Association, the International Economic Review, the Journal of International Economics, the National Academy of Science, the National Research Council, the National Science Foundation, and the Social Sciences Council.

The series is organized alphabetically by organization and by folder title, except for the Econometric Society folders which are chronological by year.

Contains curriculum vitae, personal correspondence mostly from the 1990s, graduate school materials, newspaper articles and clippings, and other items of personal and biographical interest. Catalog of McKenzie library held by the Institute of Economic Research in Japan is in English and Japanese. Arranged alphabetically by folder title.

Notes, manuscripts, drafts, proofs, and reprints for many of McKenzie's publications spanning his entire career. Includes his Princeton thesis and manuscripts of a few unpublished articles. Major topics include the turnpike theorem, general equilibrium, and optimal economic growth, with extensive notes and drafts for writings on all three topics. A few folders house correspondence pertaining to specific articles and areas of research, often including comments and critiques of McKenzie's ideas by his peers. Also included are McKenzie's contributions to the 1987 New Palgrave Dictionary of Economics, the 1983 Handbook of Mathematical Economics, and the International Encyclopedia of the Social Sciences. Additionally, there is a small group of bound material from graduate courses McKenzie took in the 1950s with McKenzie's annotations. Folders arranged alphabetically by title. For published articles, the date refers to the date of publication.