Ephemera (singular:
ephemeron) is any transitory written or printed matter not meant to be retained or preserved. The word derives from the Greek, meaning things lasting no more than a day. Some
collectible ephemera are advertising
trade cards,
airsickness bags,
bookmarks, catalogues,
greeting cards, letters,
pamphlets,
postcards,
posters,
prospectuses, defunct
stock certificates or
tickets, and
zines.