Writing paper, not exceeding in size, when folded once, five by eight inches.
Source: Webster's dictionaryAnother cause of concern for the censors was that Marion was shown flushing a toilet, with its contents (torn-up note paper) fully visible. Source: Internet
Two boys, Alfred Butler and Jack Gerrard, retrieved it and found the contents to be a bouquet of carnations, a small silver cross and a letter on official note paper dated May 22, 1936. Source: Internet