The only known set of the postcards was acquired by writer Isaac Asimov, who featured them in his nonfiction work Futuredays: A Nineteenth Century Vision of the Year 2000 (Henry Holt and Company, 1986).
Єдиний відомий набір листівок був придбаний письменником Айзеком Азімовим, який згодом описав їх науково-фантастичній праці Futuredays: A Nineteenth Century Vision of the Year 2000 ((Henry Holt and Company, 1986).