William was inducted into the Athletic Hall of Fame in 1993. His citation is copied below:
The positions of offensive lineman in football and defenseman in lacrosse are by no stretch of imagination the “glamour spots,” yet each is critical to a successful team.
Washington College was fortunate in finding Bill Bonnet to fill the void in each sport. In football he was an outstanding guard and tackle for three years, from 1948 until 1951. “Dim” Montero, the successful Washington College football coach during the last two years the College fielded a football team, held up Bonnet as the model player – he worked the hardest in practice and produced results on the field each Saturday afternoon of play.
In lacrosse, Bonnet earned personal accolades from his college mentor, Dr. Charles B. Clark, who recognizes him as one of the strongest defensemen ever to play for the Maroon and Black. In 1952, he was chosen Honorable Mention on the United States Intercollegiate Lacrosse Association All-American team when only one All-American squad was selected from all the schools playing lacrosse. Also in 1952, he was chosen to play on the south team in the annual USILA-sponsored North/South All-Star game as well as the All-Star College/Club Lacrosse game.
In other areas of college life, he served as president of his junior class and as president of the Lambda Chi Alpha fraternity during his senior year. He was a Varsity Club member for three years and, in 1952, was selected to Who’s Who in American Colleges and Universities.
Washington College considers it an honor to induct William Sylvester Bonnet into its Athletic Hall of Fame on this date of Saturday, October 2, 1993.