The Hadamar Memorial Museum commemorates the victims of the Nazi euthanasia programs at the historical location of a former killing center. It offers a specialized educational program and provides access to its collection of individual case files, staff records, and administrative documents for research purposes. For the #LastSeen project, the Hadamar Memorial Site contributes expertise on deportations in the context of Nazi euthanasia crimes.

Public History, a department within the Culture Office of the City of Munich, is dedicated to a vibrant culture of remembrance in a diverse urban society. Public History München develops modern digital memory formats and participates in various collaborative projects. In the #LastSeen project, Public History München is involved in the conceptualization and realization of the digital learning game and the Image Atlas.

The Selma Stern Center connects key players in the field of Jewish Studies in the Berlin-Brandenburg region. Its interdisciplinary approach represents the scholarly diversity of Jewish Studies and creates spaces for topics that lie on the periphery of interest in their respective disciplines. The main goal is to foster networking and create synergies between researchers and research institutions. The Selma Stern Center for Jewish Studies is the headquarters of the project lead and core team for #LastSeen.

The USC Dornsife Center for Advanced Genocide Research at the University of Southern California in Los Angeles is an interdisciplinary research institution focused on Holocaust, genocide, and mass violence studies. Its academic program, which includes international fellowships, annual conferences, and its own research initiatives, promotes new and innovative approaches in the field. The Center collaborates closely with the USC Shoah Foundation to advance research on the Visual History Archive, which contains over 55,000 interviews with survivors of the Holocaust and other genocides. In the #LastSeen project, the USC Dornsife Center for Advanced Genocide Research is primarily involved in research and outreach activities.