Pronunciation: \i-ˈfe-mər-ə, -ˈfem-rə\
Inflected Form(s): plural ephemera also ephem·er·ae \-mər-ē, -rē\ or ephemeras
Etymology: New Latin, from Greek ephēmera, neuter plural of ephēmeros
1: something of no lasting significance —usually used in plural
2ephemera plural : paper items (as posters, broadsides, and tickets) that were originally meant to be discarded after use but have since become collectibles.
from Merriam Webster Dictionary
from Amazon.com,a list of reference books
Ephemera is transitory written and 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, catalogues, cigarette cards, greeting cards, letters, pamphlets, photographs, postcards, posters, prospectuses, stock certificates, tickets and zines. Decks of personality identification playing cards from the war in Iraq are a recent example.
In library and information science, the term ephemera also describes the class of published single-sheet or single page documents which are meant to be thrown away after one use. This classification excludes simple letters and photographs with no printing on them, which are considered manuscripts or typescripts. Large academic and national libraries and museums may collect, organize, and preserve ephemera as history. A particularly large and important example of such an archive is the John Johnson Collection of Printed Ephemera at the Bodleian Library, Oxford.
Ephemera is a noun, the plural neuter of ephemeron and ephemeros, Greek and New Latin for epi = one and hemera = day with the ancient sense extending to the mayfly and other short lived insects and flowers and for something which lasts a day or a short period of time.
Video and Audio Ephemera
By extension, Video Ephemera and Audio Ephemera refer to transitory audiovisual matter not intended to be retained or preserved. Surprisingly, the great bulk of video and audio expression has, until recently, been ephemeral. Early TV broadcasts were not preserved (indeed, the technology to preserve them postdates the invention of television). Even if radio and television stations preserve archives of their broadcasts, those backcatalogs are inaccessible in practice to the general public, leaving it to a small underground of tape traders to exchange the rare, lucky moments when something unexpected or historical came across the air.
An article on the Ephemera Society of America website notes
Printed ephemera gave way to audio and video ephemera in the twentieth century. … These present even more of a preservation problem than printed materials. Although seldom made available for libraries, when videotapes are acquired for archival preservation they are found to be made on low quality tape, poorly processed, and damaged from abuse by users.
- The Encyclopedia of Ephemera: A Guide to the Fragmentary Documents of Everyday Life for the Collector, Curator, and Historian by Maurice Rickards et alia. London: The British Library; New York: Routledge, 2000.
- Fragments of the Everyday: A Book of Australian Ephemera /Richard Stone (2005, ISBN 0-642-27601-3)
- National Library of Australia: National Library of Australia’s Ephemera homepage; catalogue records for general printed ephemera in the National Library of Australia.
- Ephemera Society of America
- Overview of the archives of the Ephemera Society of America
- Eanian Collection of Ephemera at the British Library Collection of 5,000 items relating to Victorian entertainment, especially conjuring, in the UK including posters, catalogues, trade cards etc.
- Western Australian Ephemera in the State Library of Western Australia
- Ephemera: theory & politics in organization an open access journal dedicated to the discussion of all aspects of organization
- Hugh D. Auchincloss Middle East Book Collection at Pell Center of International Relations and Public Policy at the McKillop Library at Salve Regina University 
- The John Grossman Collection of Antique Images – A popular collection of printed ephemera of visual culture from 1820-1920.
- The Art of Bookmark – Bookmark Exhibition – Includes images of early bookmarks from Victorian era and later
- ephemera– a popular blog that explores the world of old paper.
- Ampersand Vintage – Seattle-based blog dedicated to vernacular photography & vintage paper.
- Subscription newsletter featuring royal ephemera from Queen Victoria to Queen Elizabeth II. Includes rare images of menus, invitations, ceremonial documents, all in colour.
- Vintage Bookmarks– a Flickr group showing pictures of vintage bookmarks
- New Zealand Ephemera Society website– A New Zealand society for those interested in ephemera.
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