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Black History Crossword Puzzle

Across
Invented the ultraviolet camera and spectrograph which was used by NASA in the 1972 Apollo 16 flight
General surgeon who in 1893 performed the second documented successful pericardium surgery
Revolutionized the shoe industry with inventing the shoe lasting machine
Promoted more than 300 uses for peanuts
First African American to serve as governor, federal judge and federal appellate judge
First person to develop a working model of a steam engine for a war ship
Developed large-scale blood banks in World War II
Wrote a landmark bill in 1945 that prohibited discrimination in employment in Pennsylvania
Most notable invention was the improved method for the production of carbon filaments used in light bulbs
Down
Invented a steam operated propeller which assisted waterway shipping for boats to more easily navigate shallow water
A research chemist whose work laid the foundation for the steroid drug industry's production of cortisone and birth control
Invented the ice cream scoop
Invented the Imaging X-ray Spectrometer which allowed scientists to examine materials that could not be broken into smaller parts
Earned the title "The Man Who Killed Jim Crow"
Physicist known as the human computer whose math calculations were critical to the success of the 1969 Apollo 11 flight to the Moon
Invented the medical device that improves the use of lasers to remove cataracts
Was the first African-American general officer in the United States Air Force
First African American to serve as a Speaker of the House in any state legislature since Reconstruction
Progenitor of the HeLa cell line, one of the most important cell lines in medical research ever discovered
Invented a safety hood smoke protection device