After graduation from SIUE, Gib Singleton was accepted by the Art Institute of Chicago to study on a full scholarship. Gib's work there earned him a Fulbright Scholarship to study at the Accademia di Belle Arti in Florence, Italy. He later worked at the Vatican art studio where one of his many achievements was assisting with the restoration of Michelangelo's Pieta. It was in Italy he studied the Renaissance masters: Michelangelo, Bronzino and Giovani Bologna, among others. The bronze crucifix which sits atop the crosier which was carried by Pope John Paul the Second, and now by Pope Benedict XVI, was designed and created by Gib. Another of his crosses rests next to the Shroud of Turin. At the request of Jacqueline Kennedy Onassis, Gib assisted with the restoration of the centuries-old flood damaged art in Florence, Italy.
He returned to the U.S to assimilate what he had learned into the creation of Western imagery. His western, religious, and contemporary work is exhibited in the permanent collections of the Museum of Modern Art, the Cowboy Hall of Fame, the Vatican Museum, and the State of Israel, whose large collection of his art was a bequest of Prime Minister Golda Meir.
Gib is a member of the 2010 SIUE Alumni Hall of Fame.