The Microscopy Society of America (MSA) has a number of awards to honor achievements in microscopy. The series of Distinguished Scientist Awards and Burton Medal Awards began in 1975. For Distinguished Scientists, awards are made to individuals in both biological sciences and physical sciences who have had a long-standing career in microscopy or microanalysis. The Burton Medal recognizes scientists under the age of 40. Taken together there have been 117 awardees in these three categories.