With a new “forever” stamp honoring "First Lady of Physics" Chien-Shiung Wu, we have come very close to seeing a National Institute of Standards and Technology (NIST) researcher on a U.S. postage stamp. Over the course of six months in 1956, Wu worked with researchers Ernest Ambler (who went on to become NIST director in the 1970s and ’80s), Raymond W. Hayward, Dale D. Hoppes and Ralph P. Hudson