IM Eric Rosen on What Makes a World Championship Tweet | US Chess.org
Eric Carl Gustaf Bloomfield von Rosen b. 2 Jun 1879 Stockholm, Sodermanland, Sverige d. 25 Apr 1948 Skeppsholmen, Stockholm: Geneagraphie - Families all over the world
Eric Rosen - Ballotpedia
Best of US Chess 2015 #6- Eric Rosen on his Final IM Norm | US Chess.org