Silver received several awards for his work, including the 1998 American Chemical Society Award for Creative Invention and induction into the National Inventors Hall of Fame in 2011. A book of post-it notes is held in the permanent collection of the Museum of Modern Art in New York City, and both Silver and Fry are given artist credit. Personal life In 1965 Silver married Linda Martin, a computer programmer whom he met when she was an undergraduate working part time at the University of Colorado Boulder's chemistry department and he was pursuing his PhD at the same university. The couple went on to have two daughters, one of whom predeceased Silver in 2017. Silver was a painter who pursued art seriously after his retirement, working on oils and pastels on canvas and acrylics to create abstract paintings. Silver received a heart transplant in 1994. He died at his home in St. Paul, Minnesota, on May 8, 2021, from ventricular tachycardia. He was 80 years old. References 1941 births 2021 deaths 20th-century American chemists 20th-century American inventors 3M people Arizona State University alumni Deaths from ventricular tachycardia People from Saint Paul, Minnesota People from San Antonio Scientists from Texas University of Colorado Boulder alumni