Si Lewen was born in Lublin, Poland, on November 8, 1918. During World War II he served in the US Army as one of the Ritchie Boys (German-speaking Special Ops) from the invasion of Normandy to the liberation of Buchenwald. He resumed his career as a painter after the war. Lewen lives in Gwynedd, Pennsylvania. Si Lewen passed away at the Foulkways retirement home in Gwynedd, Pennsylvania, on July 25, 2016. A few days before his death, Art Spiegelman presented him with a finished copy of Si Lewen’s Parade: An Artist’s Odyssey. Lewen’s daughter Nina Kardon said, “Seeing the book brought him not only happiness, but a sense of closure to his life.” The Whitney Museum of American Art acquired several pieces of his art from Si Lewen's Parade in 2017. Art Spiegelman is an American comics writer, artist, and editor best known for his Pulitzer Prize–winning graphic novel memoir, Maus.