The fonds documents Aiyyana Maracle life and work as performance artist and writer, creator of and participant in arts festivals, her committee and conference work, scholarship, teaching, Six Nations land rights activism, transgender visibility and health projects, and personal activities. Records consist of textual records, graphic material, analog and digital sound and video recordings, and objects. Objects are comprised of garments, masks, accessories, animal bones and skins, and miscellaneous objects used in performance art and art installations. The fonds is arranged into ten series: performance art, visual art, writing, scholarship, conferences and committees, Six Nations activism, two-spirit and transgender material, notebooks and loose notes, personal records, and bibliographic records.

Fonds reflects Siebner’s intellectual and philosophical interests and ideas on art and life; his interactions with galleries, friends, family and patrons; travels; involvement in the Limners; pre-publication work for his monographs and other books; promotion and sale of art; and public art commissions.
The fonds consists of personal writing and poetry, correspondence, sales lists, inventories, exhibition announcements, sketches, clippings, photographs, film and video, prints and drawings.

Fonds consists of manuscripts, correspondence, family documents, photographs, memorabilia about Georgia and Abkhazi family, and miscellaneous pamphlets. The manuscripts include a typescript of "Manuscript of (Mrs.) Peggy Pemberton-Carter written during internment in Lunghua Prison Camp, Shanghai", accompanying watercolours by Deirdre Fee and Lilian Schlee; typescript of "Dragon Aunt Remembers, 1900-1980", unpublished; photocopy of typescript "The Curious Cage", and an extensive photograph collection of the development of the Abkhazi garden.