On a chance visit to the Field Museum of Natural History (FMNH) in Chicago, he befriended the Curator of Mammals there, Colin Campbell Sanborn, who loaned him the supplies he needed.
[2] As the Great Depression worsened, Hershkovitz was no longer able to afford life in Michigan, and in 1933 he decided to move to Ecuador, which he was told was one of the cheapest countries in the Americas to live in.
He then entered the doctoral program, but in 1941 he was awarded a Walter Rathbone Bacon Traveling Scholarship by the United States National Museum in Washington, D.C., to work in the Santa Marta area of northern Colombia, where he stayed till 1943.
In 1945, he married Anne Marie Pierrette Dode, whom he had met in France, and the same year he returned to America to continue his Bacon Scholarship studies in Washington, D.C., where his first child of three—Francine, Michael, and Mark—was born in 1946.
Schmidt retired in 1957 and his successor, Austin P. Rand, enjoyed a less positive relation with Hershkovitz, and the latter detached himself from the museum's day-to-day affairs.
[3][4] He died from complications resulting from bone cancer at the Northwestern Memorial Hospital in Chicago on 15 February 1997, at the age of 87; he continued to work on his mammalogical research until two weeks before his death.
[2] In 1977, he published a review of callitrichids that according to Ronald H. Pine was "the most heroically monumental revisionary monograph ever devoted to a Neotropical group"; it was to be the first volume of a comprehensive treatment of living New World monkeys.
[3] One of Hershkovitz's first papers was on rodents, describing two new Ecuadorean squirrels in 1938, and he continued to publish about the group, including reviews of Nectomys, Oecomys, Phyllotini, Holochilus, and scapteromyines between 1944 and 1966.
[7] However, his contributions at the time have been cited as examples of "vague notions of clade recognition",[8] "phylogenetic transcendentalism" unsubstantiated by data, and "[misleading simplification] of a complex reality".
[3] Shortly after his death, head of the FMNH's mammal division Lawrence Heaney said "The information he gathered was the basis for much of the conservation planning that's being done now in most of the major habitats in South America.
This Catalog remains an invaluable resource for any student of cetaceans who needs to know the meaning of some obscure old name and has been called "a taxonomic Rosetta Stone".