Focusing on two influential "assimilated" Jewish authors—anthropologist Franz Boas and sociologist Georg Simmel—this comparative study intends to show that the respective epistemological and ontological assumptions, considerations, and expectations of anthropology and sociology underlie the respective evaluations of the Jews' assimilation outcome in German and American societies as a form of "group extinction" in anthropology or as a form of "in-between situation" in sociology.

Approaching the history of scientific racial photography from an historical epistemology point of view, as forms of scientific evidence, Morris-Reich examines numerous scientists and scholars who developed or made use of photographic methods and techniques for the study of race.

His reconstruction of individual cases, conceptual genealogies, and emergent patterns points to the diversity of and transformations in photography's scientific status from the late nineteenth and early twentieth centuries, through the Weimar and Nazi periods and beyond, from physical anthropology to phenomenology.

Morris-Reich's 2022 book Photography and Jewish History: Five Twentieth Century Cases[4] turns to five twentieth-century cases in which photography and Jewish history intersect: Albert Kahn's utopian attempt to establish a photographic archive in Paris in order to advance world peace; the failed project of Helmar Lerski, a prominent photographer in Mandatory Palestine, on "Jewish and Arab types"; photography in the career of Eugen Fischer, a Nazi professor of genetics; the street photography of Robert Frank; and Solomon Yudovin's photographs in S. An-sky's attempt to introduce photography into the study of Russian Jewry prior to World War I, as seen from the post-Holocaust perspective of the early twenty-first century.

Morris-Reich has co-edited with Dirk Rupnow, for Ideas of "Race" in the History of the Humanities[5] and with Margaret Olin, for Photography and Imagination.