History
Jon Grepstad. - Possible the best history of pinhole on the web.
The Pinhole Point of View - A fine contemporary history by Doug Stewart
Nick Dvoraceks website - Full of historical articles, resources for teachers, cameras to build and his own work too!

Resources - What's on - Events and exhibitions
www.pinholeday.org - 2500 years after Mo Ti thought, "Oooh that's clever", World Pinhole day occurs on the last Sunday of April every year (until light stops travelling in a straight line!)
www.greggkemp.com / - Gregg Kemp kept us informed for years with his 'pinhole news' Keeping us up to date with events the hole world. A good egg, Must go to the US to buy him a pint someday!
www.pinholeresource.com - Eric Renner's original site. The people who united the pinhole world before Google!
www.f295.org - A great site for groups, what's on, and the promotion of visual creativity.
www.mrpinhole.com - Exposure calculator (although guesssing is fun!)
www.alternativephotography.com - Mad fun stuff!
http://rraz.ca/pin/pinhole.html - Digital pinhole

Pinhole Photographers
www.jobabcock.com - Jo Babcock
www.thomasbachler.de - Thomas Bachler
http://www.craigbarber.com - Craig Barber
www.alabamaarts.org/bass.html - Pinky Bass
www.boyofblue.com - Wayne Belger (Putting us all to shame!)
www.jaybender.com - Jay Bender
http://www.diannebos.com/ - Dianne Bos
www.celestebrignac.com - Celeste Brignacs
www.valeriejburke.com - Valerie Burke
http://marthacasanave.com - Martha Cassanave
www.slowlight.net - Katy Cooks blog on lensless photography and other strange persuits.
www.waltercrump.com - Walter Crump
www.pinhole.nl - Bethany De Forest (Pure magic)
www.kathrynfaulkner.com - Kathryn Faulkner
www.paologioli.it - Paolo Gioli
www3.sympatico.ca/guy.glorieux - Guy Glorieux
www.foundphotography.com - Adrian Hanft
www.jamiehousephotography.co.uk - Cutting edge uk pinhole adventurer
www.edophoto.com/ - Edward Levinson
http://thencamenow.com/photo/ - Robert Mann (if its good enough for Brad!)
www.abelardomorell.net - Albelardo Morell
http://marjapirila.com - Marja Pirila (Obscura gorgeousness).
http://www.kgi.lt/totosa.html - Tomas Salkus (Joy from wood and holes)
www.alnisstakle.com Alnis Stakle
http://www.massimostefanutti.it/ Masimo Stefanutti
www.solargraphy.com - Tarja Trygg worldwide solargraph project
www.willieannewright.com - Willie Anne Wright
www.legacyphotoproject.com - The worlds largest ever photograph!

Cameras
www.amazingcameraobscura.co.uk Rent a Camera Obscura!
http://www.steveirvine.com
Beautiful ceramic cameras and photos, (and you should see his parsnip!)
http://www.zeroimage.com/ Great pinhole cameras for sale
http://www.pinholeblender.com/ more cool cameras for sale
www.pinholesolutions.co.uk - Tim Norgate's comprehensive pinhole site
www.lomography.com - Worldwide promotion of alternative photography

Further Reading
Eric Renner: Pinhole Photography: From Historic Technique to Digital Application (Focal Press)
Make your own paper camera - Justin Quinnell (August 2009)

Further watching
The Brothers Bloom - Great film with Rachael Weisz as a pinhole photographer!
James Nachtwey- Not pinhole but essential watching for all photographers - people
One Show appearance

110 Processing (UK)
http://www.onlinephotocentre.co.uk/photo.aspx