The Memoirs, published at irregular intervals, but often out of chronological sequence, from 1893 until 1930, were monographic works focusing on scientific topics requiring exhaustive treatment. Henry Fairfield Osborn suggested the series in 1892. Ten volumes of the Memoirs comprise the results of the Jesup North Pacific Expedition, which was led by Franz Boas and was the first landmark research project of the AMNH Division of Anthropology.