"I think one man is just as good as another so long as he’s honest and decent and not a nigger or a Chinaman. Uncle Wills says that the Lord made a white man from dust, a nigger from mud, and then threw what was left and it came down a Chinaman. He does hate Chinese and Japs. So do I. It is race prejudice I guess. But I am strongly of the opinion that negroes ought to be in Arica, yellow men in Asia, and white men in Europe and America."
— Letter from Harry S. Truman to Bess Wallace, June 22, 1911.
(Source: trumanlibrary.org, via historicaltimes)
"Inoculation offered the risky alternative to a life of fear. Utilized for hundreds of years in parts of Asia and Africa, to procedure was nevertheless unknown among Europeans until the early eighteenth century. Shortly after 1700, word of the practice reached Europe from a number of sources. One was the Puritan minister Cotton Mather. In a famous letter from Boston in 1716, Mather described to his London colleagues an interview he had conducted with his “Coromantee” slave, Onesimus. The cleric had asked the African whether he had ever had smallpox. “Yes, and, No,” came the response, and Onesimus proceeded to tell Mather “that he had undergone an Operation, which had given him something of ye Small-Pox, & would forever praeserve him from it.”"
Elizabeth A. Fenn, Pox Americana: The Great Smallpox Epidemic of 1775-82
Inoculation against smallpox was brought to America by enslaved Africans. This was a major contribution to the development of this country which is massively overlooked. Yes, there were other sources for this knowledge, but Mather was the earliest and most active proponent of the practice in the colonies, and his main source of this information appears to have been Onesimus.