^"Business Records, Bankruptcy Proceedings". The New York Times. March 12, 1929. p. 53. "Experimenter Publishing Co., Inc., 230 Fifth Avenue – Liabilities approximately $500,000, assets not stated. Principal creditors listed are Art Color Printing Co., Dunellen, N.J., $152,908; Bulkley Dunton Co., $154,406 ..."
^ abThe bankruptcy is described in detail in Tom Perry, "An Amazing Story: Experiment in Bankruptcy" in Amazing Science Fiction vol. 51, no. 3 (May 1978), p. 161.
^Carlson, Walter (June 23, 1965). "Advertising: Death and Taxes and Insurance". The New York Times. p. 62." [P]urchase by the Ultimate Publishing Company, Inc., of two science-fiction magazines from Ziff-Davis Publishing Company. [Amazing Stories and Fantastic.] ... according to Sol Cohen, president of Ultimate."
^Nicholls, Peter, "Hugo", in Clute & Nicholls, Hugo, p. 595.
^See, for example, the titles of Moskowitz, Hugo Gernsback: Father of Science Fiction, and Siegel, Hugo Gernsback: Father of Modern Science Fiction.
^Fairman began writing the editorials with the May 1956 issue, and in the July 1956 editorial he explained that Browne was on a two-month contract in Hollywood, writing scripts for Cheyenne. In the August editorial he announced that the change was permanent, and in the September 1956 issue Fairman was listed as editor on the masthead for the first time. See Fairman, Paul W. (May 1956). "The Observatory". Amazing Stories. 30 (5): 3., Fairman, Paul W. (July 1956). "The Observatory". Amazing Stories. 30 (7): 6., Fairman, Paul W. (August 1956). "The Observatory". Amazing Stories. 30 (8): 6., Fairman, Paul W. (September 1956). "Masthead". Amazing Stories. 30 (9).
^Lobsenz was introduced in the November 1958 editorial, as if he were the editor. His title was editorial director. According to Mike Ashley, who corresponded with Cele Lalli, he was brought in as a consultant, wrote the editorials and story blurbs, met intermittently with Goldsmith, and read the stories she selected, but "she was soon left alone to edit the magazines as she saw fit". See Fairman, Paul W. (November 1958). "Introducing the New Editor". Amazing Stories. 32 (11): 5., and Ashley, Transformations, p. 222.