Ephemera is transitory written an printed matter, not intended 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, baseball cards, bookmarks, cigarette cards, greeting cards, letters, pamphlets, photographs, postcards, posters, stock certificates, tickets, and zines. Decks of personality identification playing cards from the war in Iraq are a recent example.