According to Wikipedia,
Frank Byron Rowlett was an American cryptologist. Life and career Rowlett was born in Rose Hill, Lee County, Virginia and attended Emory & Henry College in Emory, Virginia. In 1929 he received a bachelor's degree in mathematics and chemistry. He was hired by William Friedman as a "junior cryptanalyst" for the Signals Intelligence Service on April Fools' Day 1930; shortly after, he was followed into SIS by Abraham Sinkov and Solomon Kullback.
Frank Rowlett is affiliated with the following schools: