Leó Szilárd | Einstein–Szilárd letter | Petition Crown | Millenary Petition | election petition | Curative petition |
Its first representation was in 1947, when bulletin co-founder Hyman Goldsmith asked artist Martyl Langsdorf (wife of Manhattan Project research associate and Szilárd petition signatory Alexander Langsdorf, Jr.) to design a cover for the magazine's June 1947 issue.