Gui (Guillaume) Mombaerts toured Europe as a pianist after winning the 1926 Prix Gunther and ranking as finalist in the 1927 International Chopin Piano Competition. He joined the faculty of Northwestern University's School of Music in 1948, and served as Ralph Votapek piano instructor. The Gui Mombaerts Papers, spanning the years 1922-1980, are contained in two boxes. They include biographical material, vitae, press releases, clippings, and interviews.