Philip Dearmond Curtin was a Professor Emeritus of Johns Hopkins University and historian on Africa and the Atlantic slave trade. His most famous work, The Atlantic Slave Trade: A Census was one of the first estimates of the number of slaves transported across the Atlantic Ocean between the 16th century and 1870, yielding an estimate of 9,566,000 African slaves imported to the Americas. Although subsequent authors have disputed this number, his work remains the most commonly cited. He also wrote about how many Africans were taken and from what location, how many died during the middle passage, how many actually arrived in the Americas, and to what colonies/countries they were imported.
After graduation, he began teaching at Swarthmore College where he remained until 1956. He relocated to the University of Wisconsin–Madison where he taught from 1956 through 1975. There, Curtin and fellow historian Jan Vansina established a department of African languages and literature during 1956, as part of one of the first academic African studies programs established at a college in the United States. From 1975 until the time of his death he was a member of the faculty of Johns Hopkins University. Recognized during 1983 as a MacArthur Fellow with its accompanying "genius grant", Curtin published a total of 19 books, which include Death by Migration: Europe's Encounter with the Tropical World in the Nineteenth Century, described by the American Historical Review as "ground-breaking." In addition to the aforementioned calculation, he has challenged the common opinion that improvements of medicine were responsible for the increased attempts at European colonization of Africa during the 19th century. In his 1969 book The Atlantic Slave Trade: A Census, Curtin researched the sources of frequently used estimates of the number of individuals transported across the Atlantic Ocean by the slave trade. His analysis of shipping contracts and data from the ports of entry enabled him to estimate between 9 and 10 million individuals being transported on slave ships, with a margin of error of 20%, out of the 20 to 30 million that had been loaded aboard at ports in Africa. Prior to Curtin's research, estimates of the number of individuals brought from Africa as slaves ranged from 3.5 million to numbers as high as 100 million individuals. A widely cited number of 15 million slaves used by W. E. B. Du Bois, who had gotten the number from abolitionist Edward Dunbar. Another widely quoted estimate of 20 million slaves was based on calculations using data concerning slaves in Jamaica that was adjusted for the entire Atlantic slave trade, though the original data used to make the calculations has since been lost. His 1989 book Death by Migration combined medical and population history, tracing the effects of tropical diseases on Europeans in tropical Africa during the time before medicines were available to treat these conditions effectively. A controversial opinion piece published in a 1995 issue of The Chronicle of Higher Education titled "Ghettoizing African History" criticized the frequent equation of African and African American scholars in college and university departments of history with jobs concerning the history of Africa. Although Curtin mentioned that this practice might discourage some caucasian academicians from specializing in African studies, his comments were also an argument for more opportunities for African-American scholars. While many visitors to Africa have been to Gorée Island in Senegal, described as a site where as many as 20 million Africans were fattened for shipment across the Atlantic Ocean from the Slave House after being shackled there in dank cells, Curtin debunked the traditional account, stating that "he whole story is phony". Curtin stated that the Slave House, one of the most beautiful houses on the island, would not have been used for storing slaves, that the rocks near the shore would make docking boats perilous and estimated that a total of no more than 50,000 slaves had passed through the island. Senegalese academics criticized Curtin's statement, stating that he was guilty of "stealing their history". Books:
Africa Remembered: Narratives by West Africans from the Era of the Slave Trade