Remix or bricolage is recognized as a primary mode of knowledge creation in contemporary digital culture. Archival arrangement represents a form of bricolage that archivists have been practicing for years. By organizing records according to provenance, archivists engage in knowledge creation. Archival theory holds that records are created as an output from social and bureaucratic processes. Archival description, then, could serve as a form of archival record, bearing evidence of the processes of archival arrangement. Current participatory and community-based approaches to archival description urgently require an evidential record of their processes of community consultation and professional mediation. This paper examines two Canadian community-based, participatory archival projects. Project Naming, at Library and Archives Canada, draws upon Inuit community contributions to augment the often sparse and sometimes offensive descriptions of historic photos of arctic peoples. The Sex Work Database at the University of Manitoba, works with sex work activists to create and apply a tagging folksonomy to a collection of websites, organizational records and news media. Analysis of these diverse, community-based projects reveals how current approaches to description make it difficult to distinguish between professional and community contributions to arrangement and description, and proposes ways to make such contributions more apparent.