Anthony Gualco has completed two books on the history of Union City. One is the ":History of Alvarado," a narrative based on his research on on Alvarado in four volumes. The other, "The History of Decoto," is a three volume set that covers the period 1870 to Union City incorporation on January 14, 1959. Both books are in narrative form and include photos added since his original writing of the work on the website.

Both volumes have been accepted by the Fremont Branch of Alameda County Library on Stevenson Blvd for inclusion into their local research library. They are available at the library in print form and on DVD. They are also available on DVD at the Union City Historical Museum.