The group consist of the gilded Columbia Triumphant on top of the monument, Fortitude, Pacific, Atlantic, Justice, and History.

Also, in New York, he created two pediments and other sculptural details for the Frick Mansion[3] the Firemen's Memorial, a group of figures in Riverside Park which consists of two marble figures on the side known as Duty and Courage, and a bronze table of monumental proportions with the design of a fire engine pulled by galloping horses.

Before Piccirilli and his family arrived in America, many American artists were forced to travel to Italy to have their models carved into stone.

Attilio and his family collaborated with Paul Bartlett, Frederick MacMonnies, Hermon MacNeil, Massey Rhind, Karl Bitter, Augustus Saint-Gaudens, Olin Warner, Lorado Taft, Charles Niehaus, and Andrew O'Connor.

Piccirrili also did architectural work for Cass Gilbert, Henry Bacon, McKim, Mead, and White, Carrére, and Hastings.

He won numerous prizes including a Gold Medal at the Panama Pacific Exposition in San Francisco in 1915.

Piccirilli's 1935 Pyrex glass relief sculpture Advance Forever, Eternal Youth over the entrance of the Palazzo d'Italia at Rockefeller Center was removed during World War Two when the Italian inscriptions were used by Mussolini,[5] and it was associated with fascist iconography.

White marble "Fragilina" now stands in the newly re-arranged American Wing of the Metropolitan Museum of Art in New York.

Piccirilli also made five additional smaller copies, one of which is in the Muscarelle Museum of Art at the College of William and Mary.

When facial characteristics are precisely delineated, the observer is denied the opportunity of personally visualizing his ideal type.