– Valerio. An Extraordinary Ordinary Man. The Dandelion, vo. 6 (Oct. 2005) n° 23.

Michael Coughlin, "Such Marvelous Stories"
Chuck Hamilton, "A Tattered Paperback & Valerio"
Frederico Arcos, "He Was Steadfast In His Principles"
Archivio G. Pinelli, "Italians Remember Their Friend"
Archivio G. Pinelli, "Valerio’s Bequest"
Ronald Creagh, "Valerio Was Patient With Me"
Paul Berman, "Kropotkin & Thoreau Were His Teachers"