John Adams Whipple (September 10, 1822 – 1891) was an American inventor and early photographer. He was the first in the United States to manufacture the chemicals used for daguerreotypes; he pioneered astronomical and night photography; he was a prize-winner for his extraordinary early photographs of the moon;
Black World War II chemist Dr. Samuel P. Massie Jr. is noted for his work on uranium isotopes for the atomic bomb. He made history as the first black faculty member of the U.S. Naval Academy in 1966. Named among great scientists like Marie Curie, George Washington Carver and DNA pioneers Watson and Crick, Dr. Massie conducted decades of work that led to the development of drugs to treat mental illness, malaria, meningitis, gonorrhea, herpes and cancer.
Here are some new additions to The Best Sites For Learning About Nelson Mandela: The Nelson Mandela Digital Archive Project is an amazing resource. "Here’s Mandela’s first television interview. You can learn more about it at Open Culture." - from http://larryferlazzo.edublogs.org/2012/05/06/nelson-mandela-resources/