1950s

When we aren't sure of a date, use this broad term, and hope to pin it down better later.

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Births and Deaths:

Carl Brandon - Joan W. Carr

Convention series started or ended:

Onetime conventions:

Bids:

Publications started or ended:

ASFO - Aberration - Authentic - Ballard Chronicles - Bang! - Camber Art Folio - Canadian Capers - Cloche by Night - Detroit Propaganda - Distaff - Fan To See - Fan-Fare - First Person Singular - GAFMOI! - Harris School of Motoring - Hints on Stencil Cutting - Kteic - Maelstrom - Mallophagan - Novae Terrae - Orb - Polaris - The Goon Library - Toto - Tyrann

Publishers founded or closed:

Awards made, started or ended:

Stores opened or closed:

F. and S. F. Book Co. - Medway Science & Fantasy Centre Bookshop

Clubs founded or disbanded:

ASFO - Baltimore Science Fiction Forum - EISFA - Fantasy Art Society - ISFS - Lakelands S. F. Organization - MaD Productions - Mañana Literary Society - North East Science Fiction Society - NotFans - Portland Science-Fantasy Society - Surrey Circle - The British Teenage Fantasy and Science Fiction Society - Twin Cities Fantasy Society - University of Illinois at Chicago Science Fiction Society - Weird Tales Club

Fan History:

Carl Brandon - Eighth Fandom - Golden Age - Harris-White Feud - Joan W. Carr - Smof - Tower to the Moon

Miscellaneous:

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Asia:

Australia:

Britain:

Authentic - BRE - Bang! - Camber Art Folio - Cloche by Night - Distaff - Fantasy Art Society - GAFMOI! - Harris School of Motoring - Harris-White Feud - Hints on Stencil Cutting - Inchmery Fandom - Joan W. Carr - Lakelands S. F. Organization - MaD Productions - Medway Science & Fantasy Centre Bookshop - North East Science Fiction Society - NotFans - Novae Terrae - Surrey Circle - Tentacles Across the Sea - The British Teenage Fantasy and Science Fiction Society - The Goon Library

Canada:

Canadian Capers

Europe:

ISFS

Ireland:

Belfast Triangle - Harris-White Feud

New Zealand:

US:

ASFO - Aberration - Alice in Thrillingwonderland - Ballard Chronicles - Baltimore Science Fiction Forum - Carl Brandon - Detroit Propaganda - EISFA - Eighth Fandom - F. and S. F. Book Co. - Fan To See - Fan-Fare - First Person Singular - Ipsy-Wipsy Institute - Kteic - Maelstrom - Mallophagan - Mañana Literary Society - Orb - Polaris - Portland Science-Fantasy Society - Tentacles Across the Sea - The Birth of a Notion - The Goon Library - Tower to the Moon - Twin Cities Fantasy Society - Tyrann - University of Illinois at Chicago Science Fiction Society - Weird Tales Club

Rest of the World: