Edmar John Mednis (1937-2002) was a Latvian-born American grandmaster (1980) who took 2nd place in the 1955 World Junior Championship, behind Boris Spassky. He wrote 26 chess books and hundreds of chess articles. He was trained as a chemical engineer, then became a stock broker. He was the first player to beat Bobby Fischer in a U.S. Championship. It wasn’t the United States Chess Federation, it was Puerto Rican Chess Federation that formerly proposed him for the Grandmaster title. He died of a heart attack.