"Why I Like Stamp Collecting", Minkus Stamp Journal, 1971 [1]Archived 3 August 2012 at archive.today, cf. "The new Ayn Rand companion", Mimi Reisel Gladstein, p. 130, Greenwood Publishing Group, 1999, ISBN0-313-30321-5
"Why I Like Stamp Collecting", Minkus Stamp Journal, 1971 [1]Archived 3 August 2012 at archive.today, cf. "The new Ayn Rand companion", Mimi Reisel Gladstein, p. 130, Greenwood Publishing Group, 1999, ISBN0-313-30321-5