Listed below are other sites of interest pertaining to photography.

More on the Daguerreotype:
http://www.daguerre.org/
http://www.ccsd.ca/charlotte/dagazine/mi/exhibit/index.htm
http://www.tufts.edu/programs/mma/fah189/2002/nmadahar/techniques.html

American Photography:
http://www.pbs.org/ktca/americanphotography/index.html

http://www.photography-museum.com/
http://www.tfaoi.com/aa/1aa/1aa3.htm

My Favorite photo sites:
http://www.photoeye.com/
http://www.kenrockwell.com/index.htm
http://www.dpreview.com/
http://www.nationalgeographic.com/photography/

History of photography
http://www.photo.net/history/timeline
http://www.artcyclopedia.com/media/Photographer.html
http://www.ralf-hecht.de/weimar/kap2.html
http://www.rleggat.com/photohistory/index.html

Photo magazines :
http://www.photographic.com/

http://www.shutterbug.com/
http://www.adobe.com/products/photoshop/community.html
http://www.outdoorphotographer.com/

Educational materials:
www.cambridgeincolour.com/tutorials.htm

http://wps.prenhall.com/hss_london_ashortcour_6/0,10417,1988310-,00.html

http://www.mccannas.com/pshop/photosh0.htm
http://myjanee.home.insightbb.com/tutorials.htm