U.S. Postal Service Honors Four American Scientists With Forever Stamps

Posted on June 20, 2011

Four American Scientist Forever Stamps 2011

Four American scientists have been honored on Forever stamps issued by the U.S. Postal Service. The stamps were launched at a special ceremony at the Science Museum of Minnesota.

The scientists on the four stamps include chemist Melvin Calvin, botanist Asa Gray, physicist Maria Goeppert Mayer and biochemist Severo Ochoa.
Photo: U.S. Postal Service