
1) Billboard bills 2) Campaign paraphernalia 3) Certain ads 4) Certain movie advertisements 5) Circus harbingers 6) Common dorm room decorations 7) News sources in China 8) Notices on fences 9) Placards 10) Rock-concert souvenirs 11) Silent salesmen 12) Some are trolls 13) Some movie advertisements
Found on
https://www.crosswordclues.com/clue/posters

1) Pinups 2) Placards 3) Signage
Found on
https://www.crosswordclues.com/clue/posters

Single or multi-sheet notices made to attract attention to events, activities, causes, goods, or services. They are for posting, usually in a public place and are chiefly pictorial. They are intended to make an immediate impression from a distance. Posters do not include poster presentations at conferences and meetings. ... (12 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973
No exact match found.