 In a 2002 issue of "Hogan's Alley", Holtz wrote about his almost accidental discovery in a microfilmed archive of "The Pittsburgh Leader" of F. E. Johnson's "Bobby the Boy Scout", which Holtz traced back to August 21, 1911, and regards as the very first serious adventure comic.Maynard Frank Wolfe ("Rube Goldberg Inventions") praised Holtz as "the extraordinary collector conservator computer wizard and historian of cartoon art.