New York Times, New York, New York, Sunday, November 17, 1963 - Page 411
Excerpt from “Chess: Gligoric's Zone 1 Display” by Al Horowitz
“These three are now qualified, along with the United States zonal trio, Arthur Bisguier, Bobby Fischer and Sammy Reshevsky, and various others from the remaining global zones, to compete in the next interzonal tournament. It will be held in the Netherlands about June of 1964. From these 24 interzonal contestants, the top-scoring eight will be chosen as candidates for the challenger's role to the world title.