This is a catalogue of and guide to the Charles S. Peirce Papers which are presently housed in the Houghton Library, the rare book and manuscript library at Harvard University. The papers were for the most part received by the Harvard Philosophy Department from Peirce's widow in the winter of 1914-15, less than a year after his death. These are the papers which have been worked on over the years by several scholars, initially by Josiah Royce, who unfortunately died before much progress was made, more recently by Charles Hartshorne, Paul Weiss, and Arthur Burks, as editors of the Collected Papers,* and most recently by Max H. Fisch, in connection with the preparation of an intellectual biography of Peirce.
The papers have been divided into two parts. Part One consists principally of manuscripts; Part Two, of correspondence. The manuscripts range over the whole of Peirce's intellectual life and include as anyone familiar with Peirce might expect manuscripts on logic, mathematics, metaphysics, and pragmatism. Also included are Peirce's scientific manuscripts, his manuscripts in the history of science and in linguistics, his reviews and translations, and various other manuscripts, many of biographical interest. In addition to the manuscripts, there is a considerable body of correspondence which ranges over much of Peirce's private and professional life. Placed with this correspondence, but organized separately, is the correspondence of Peirce's second wife Juliette, the correspondence among various members of Peirce's family, and some miscellaneous correspondence.
In the fall of 1960 when I began my work on the Catalogue, Peirce's papers had been assembled for the convenience of those who, like myself, were engaged in one or another of several Peirce projects. Although the papers were all in one place, there were, in fast, three separate sets of Peirce materials, all organized, with a catalogue for one and a catalogue of sorts for another, but none for the third. The bulk of the Peirce Collection at Harvard, consisting of sixty-one boxes and bundles, had been maintained in the Archives of Widener Library The "Archives" material had been organized, boxed, and catalogued in 1941 by Knight W. McMahan. McMahan's ninety-nine page typewritten "Catalogue of the C. S. Peirce Manuscripts," with its description of what the boxes contained,

served well the needs of Peirce scholars who sought to examine the contents of those boxes and, although incomplete, it came as close as was possible at that time to putting Peirce's papers into some kind of final order. Later John F. Boler contributed an eleven-page addition which dealt more effectively than McMahan's catalogue had with Peirce's book reviews.
Another distinguishable part of the Peirce Collection, also sizable but of less importance than the material located in the Archives, had been maintained in Houghton Library. The "Houghton" material consisted of some nineteen boxes which had neither been classified nor catalogued until a preliminary arrangement and listing of this material was effected in 1960 by John Boler in his "Interim Catalogue," a typescript of thirteen pages.

The third distinguishable part of the Peirce Collection the correspondence had been kept mostly with the "Archives" material and had been partially organized by McMahan at the time he was working on his catalogue. But since then, in 1960 to be specific, the collection of family correspondence, formerly in the Benjamin Peirce Papers in the Archives had been transferred to the Charles Peirce Collection by authorization of Charles Peirce's niece, Miss Helen Ellis. Subsequently, more family correspondence found its way into the Collection, again, by authorization of Miss Helen Ellis. By this time, the whole of the correspondence had been completely reorganized.

In addition to the Peirce material noted above, there were miscellaneous manuscripts that had been listed separately in the catalogues of Widener and Houghton; various collections of articles on or by Peirce, some of the articles being annotated; annotated books from Peirce's library; public documents and photographs; and much unedited, scraplike material, to mention only some of the items which needed to be integrated with the rest. The present catalogue is the attempt to gather several collections and miscellaneous items into one collection. Unquestionably, the fact that so much of the Peirce manuscripts and correspondence had already been ordered or partially ordered, greatly facilitated my own efforts at integration. Clearly, if it were not for the fast that the cataloguing of the Peirce Papers had a history, this catalogue could not have been produced, most certainly not in the time it took to produce it.

Having noted the history of the cataloguing of the Peirce Papers, I would be remiss if I did not mention the contributions of W. F. Kernan and V. F. Lenzen.* Kernan's "List of C. S. Peirce Manuscripts," a nine-page

typescript, was prepared at the time he was assisting Royce in organizing Peirce's papers and collaborating with him on an article entitled "Charles Sanders Peirce" which appeared in the Journal of Philosophy, December 21, 1916, a memorial issue devoted to Peirce. Lenzen's "Notes on Papers and MSS. in The Charles S. Peirce Collection," a twenty-page typescript, is an evaluation of the contents and the physical condition of the manuscripts which, at the time (December 1917), were sorted into eighty-three boxes. The Kernan and Lenzen typescripts, along with the catalogues of Boler and McMahan, are kept with the Peirce Papers, and are available for consultation.

Needless to say, I am indebted to all those who have shared in the ordering and cataloguing of the Peirce Papers. Nor is my indebtedness limited to those who were actively engaged in cataloguing per se. My indebtedness extends to the several editors of the Collected Papers who were engaged, along with the others, in the work of identifying, classifying, and uniting papers which had become separated. With very few exceptions, the readers of this catalogue and of the microfilm edition of Peirce's papers which has recently been made available, and even the persons who may in the future use this catalogue as a guide to the original papers themselves, will get only a very inadequate sense of the years of labor that have gone into this sort of preliminary editorial work. For this and other reasons I want to record my indebtedness to those who most recently have been and still continue to be engaged in that same work of identifying, classifying, and reassembling. Besides Max H. Fisch, for whom a special word of gratitude is reserved, I wish to mention especially the contributions of Carolyn Eisele to the mathematics and the history of science sections of the Catalogue, of Ruth B. Fisch to the biography and correspondence sections, and of Don D. Roberts who ordered and provided a page-by-page index of the important Logic Notebook (MS. 339) and who had done considerable work on a number of logic manuscripts. Although each of the persons mentioned had areas of spe-cial interest, their efforts in behalf of the Catalogue were not confined only to those areas. Over the past few years earlier drafts of this catalogue were in active use, and this afforded opportunity for correction and am-plification. The present catalogue is the beneficiary of both. So to those persons mentioned, I owe much of what is valuable in this catalogue; for its failures, I alone am responsible.
My major debt of gratitude is to Max H. Fisch. It is only right to point out the fact that he, along with Ruth B. Fisch, has spent an incredible amount of time on the sort of preliminary editorial work noted above. Therefore, it is not surprising that nearly every page of the Catalogue bears witness to his scholarship and encyclopedic knowledge of Peirce's life and works. To be more specific: McMahan's catalogue dealt reasonably well with Peirce's mathematical, philosophical, and scientific papers, but only sketchily with his correspondence and other papers of biographical interest. It was Professor Fisch's extensive work on the correspondence and these other papers which resulted, especially in the case of the correspondence, in the organization exhibited in this catalogue. Moreover, it was he, who, more than anyone else, saw the need, not only for a more adequate catalogue of Peirce's papers than existed at the time but also for the preservation of the papers themselves. So two projects cataloguing and microfilming were joined and brought to completion under his watchful eye.

This catalogue would not have been possible had it not been for the generosity of the Department of Philosophy of Harvard University, not only for consenting to and encouraging the cataloguing project but also for contributing very substantial financial assistance along the way. Specifically, I want to acknowledge a grant for the academic year 1960-61, wich allowed me to prepare the ground for the Catalogue, and other grants which enabled me to complete the project. I want also to acknowledge my gratitude to Professors Morton G. White and Donald C. Williams, who made up the Peirce Committee of the Harvard Philosophy Department, for their cordial cooperation throughout the years I was engaged on the project; to the Department for permission to quote from the unpublished manuscripts; and to the Department, again, for its generous subsidy that cleared the way for publication of the Catalogue.

I also wish to express my gratitude to the Henry P. Kendall Foundation for a grant-in-aid which got me through one summer and to the Mount Holyoke College Grants Committee for a research grant which helped to defray the cost of preparing the manuscript for publication. Grateful acknowledgment is made to the librarians, both at Harvard and Mount Holyoke College, whose cooperation contributed to the success of this project, but in particular to Miss Carolyn Jakeman of the Houghton Library and to Dr. William Bond, its Director. I would also like to express my thanks to Leone Barron, Director of the University of Massachusetts Press, for her unfailing enthusiasm and valuable editorial advice; to several Mount Holyoke College students for help in various ways, but principally to Miss Diane Goldberg for her help in connection with Appendix II and the General Index; and finally to my wife for her help at different stages in the preparation of the Catalogue.

South Hadley, Massachusetts RICHARD S. ROBIN June, 1967