Thomas L. Jennings (1791–1856) was an African-American tradesman and abolitionist in in New York City, New York. He was a free black who operated a tailoring and dry-cleaning business, and in 1821 was the first African American to be granted a patent. Jennings became active in working for his race and civil rights for the black community. In 1831, he was selected as … [Read more...] about Friday Open Thread: More Black Scientists and Inventors