Among the books Spike has published on the Florentine Renaissance are "Masaccio" (Abbeville Press 1996), and "Fra Angelico" (Abbeville Press, 1997), both also available in Italian and French editions. His "Fra Angelico", which also appeared in a German edition by Hirmer Verlag, was named “Art Book of the Year 1997” by the Hearst newspapers in the USA. His "catalogue raisonné" of the paintings of Caravaggio (2001) was published in a second Revised Edition in 2010. His "Young Michelangelo: The Path to the Sistine: A Biography" was published in 2010 (Vendome Press; ).