publisher (n.)

• adviser
• announcer
• annunciator
• authority
• bibliographer
• bibliophile
• bibliopole
• bibliopolist
• bibliothec
• bookbinder
• bookdealer
• booklover
• bookmaker
• bookman
• bookseller
• bookworm
• cataloger
• channel
• communicant
• communicator
• curator
• editor
• gossipmonger
• grapevine
• informant
• informer
• interviewee
• librarian
• monitor
• mouthpiece
• newsmonger
• press
• printer
• radio
• reporter
• source
• spokesman
• television
• teller
• tipster
• tout
• witness