Universidad Nacional Autónoma de México — Archivo Histórico
The Archivo Histórico de la Universidad Nacional Autónoma de México uses AtoM as its digital archival-description and access platform. A 2021 case study by an AHUNAM technical archivist explains how the archive organised the Grupo de Información en Reproducción Elegida fonds and then entered catalogue records at file and document level into AtoM, together with digital images of objects, teaching materials and posters. The resulting descriptions were made available for remote consultation. A 2020 UNAM institutional article independently directed researchers to the same AHUNAM online catalogue, and the AtoM community users list identifies the archive as an installation. These sources establish operational adoption, but they do not document a predecessor system, initial launch year or data migration. The previously reported AtoM 2.2.0 version is omitted because the cited XML export could not be independently retrieved.