Source : Webster's Revised Unabridged Dictionary (1913)

Publicity pamphlet \Publicity pamphlet\
   A pamphlet which, in some States of the United States having
   the initiative or referendum, is mailed to the voters to
   inform them as to the nature of a measure submitted by the
   initiative or referendum. The pamphlet contains a copy of the
   proposed law and arguments for and against it by those
   favoring and opposing it, respectively.