These index cards were created to help government clerks locate completed Petitions for Naturalization. They are sorted by last name using Soundex, a pronunciation-based system which accounts for variations in the spelling of foreign names transliterated into English. For Hyman, there were two cards: one for Victor (Soundex V236); and one for his original surname, recorded inconsistently as either Chiry (Soundex C600, above) or Chirom.