After Gilbert's death there were several attempts to identify additional ballads that were missing from the collected editions that had been published to that point. Dark & Gray (1923), Goldberg (1929), and Searle (1932) identified and published additional ballads, not all of which have been accepted into the canon. The most recent edition, edited by James Ellis (1970), includes all the poems that Gilbert himself acknowledged, all the poems from Dark & Gray, Goldberg, and/or Searle that Ellis finds authentic, and others identified by no other previous compilers.