This series of materials consists primarily of drafts of Mills' poetry and prose, as well as essay drafts, autobiographical pieces, short stories, reflections, a radio play script, fragments, notes, lists, and numerous drafts of correspondence. Some of these draft letters were addressed to Peter Quartermaine, Robin Crozier, Alan Halsey, Adrian Mitchell, Marjorie Perlof, Jonathan Williams, and Pia Simig, among several others. A small portion of the notes and fragments pertain to novel ideas that Mills was developing and researching. The essays pertain to the works of poets and artists (e.g. Ian Hamilton Finlay, Roy Fisher, David Prentice, and Peter Berry), as well as broader topics, such as the "world of little magazines." Additional materials pertaining to Mills' writing include mockups and layouts of works such as poetry booklets and maquettes, but most significantly the board mockups of "30 Signatures to Silver Catches" by Ian Hamilton Finlay, Margot Sandeman, and Stuart Mills, which Tarasque Press printed in 1971 and also likely put on exhibition. To a lesser extent, the series also contains drawings, paintings, and collages; a small amount of teaching notes; and material related to to Tarasque, Aggie Weston's, and Poet's Poems. Mills' drawing of the Tarasque bird that became the magazine's front cover design is in this series. Some of these publications-related materials include catalogue lists, a note to subscribers, and planning notes.

Consists of drafts of writings by others that John Ennis accumulated throughout his career. These include drafts of the work of known poets such as Eavan Boland, Thomas Kinsella, and Medbh McGuckian, mostly collected through Ennis's involvement in the selection of poetry collections for Poetry Ireland's book club, Poetry Ireland Choice (PIC); as well as writings by poets and authors, such as Chris Agee and Stephanie McKenzie, whom Ennis mentored informally or through his work as a creative writing workshop facilitator. In addition, there are some book-length drafts of poetry collections and longer works submitted for Ennis's Irish-Canadian anthologies. Drafts are occasionally annotated or accompanied by related letters, clippings, and other printed materials.

This series consists of drafts and proofs of poems and nonfiction books, as well as of articles, interviews, book reviews, and other writings that appeared in various publications, along with some student papers, song lyrics, drawings, and miscellaneous writings. Related editorial and publishing correspondence is also often present along with draft materials for published works.

Consists of drafts of both individual works and full-length books and book projects by John Ennis in various stages of completion, along with proofs, poem lists, notebooks and loose notes, source materials, research, photographs, cover designs, publicity materials, reviews, correspondence, and press clippings related to Ennis's writings. While the vast majority of materials relate to his poetry, both published and unpublished, a smaller number pertain to musical works created in collaboration with composer Eric Sweeney for which Ennis composed lyrics, drafts of unpublished short stories from the 1970s, and Ennis's 1997 PhD thesis on the use of myth and archetypes in his own poetry.

Consists of drafts, notes, proofs, and source materials for McCarthy's poetry and novels, as well as for his nonfiction writings and play and film treatments. Of note are his extensive poetry workbooks that contain early drafts of many of his published poems.

Consists of research material, notes, outlines, drafts, galleys, and proofs. Yellow legal notepads contain notes, early draft material, and inserts for later typed and printed versions. Notepads are identified by their first lines, though a single notepad may contain a variety of material, including material relating to other works, correspondence drafts, and other unrelated notes. Corrected typescript and printout drafts often show significant revisions. Material from various stages of the publication process is present, including setting copies with copy-editor's and typesetter's marks, galleys, page proofs, F (folded-and-gathered pages, in signatures but not yet bound), blueline proofs ("confirmation blues"), advance copies (bound uncorrected proofs, pre-publication, often used for book reviewers) and production/design material with page and dust-jacket samples. Page numbers are noted for paginated material.

Consists of publisher's files of notable British socialist authors of the 20th century. Files primarily include correspondence and publication agreements with some ephemera (e.g. dust jackets, newspaper clippings). Much of the correspondence regards copyright and use permissions, with some content regarding sales, microfilming, and editorial notes.