History info
http://invsee.asu.edu/modules/lightbulb/meathist.htm.
http://www.bulbs.com/learning/history.aspx.
The pictures
http://www.wired.com/thisdayintech/2009/12/1218joseph-swan-electric-bulb/
http://home.frognet.net/~ejcov/index40.html
Incandescent Bulb info
Giancoli. Physics. Sixth edition.Pearson Prentice Hall. Upper Saddle River, New Jersey. 2005. page 495.
http://home.howstuffworks.com/light-bulb1.htm
http://tpt.aapt.org/resource/1/phteah/v37/i9/p520_s1
http://donklipstein.com/bulb1.html#vvg
The pictures
http://home.howstuffworks.com/light-bulb1.htm
http://pastormikelandry.wordpress.com/2010/03/18/burnt-out-light-bulbs/
http://www.sciencephoto.com/media/343488/enlarge
LED Bulb info
http://science.howstuffworks.com/environmental/green-tech/sustainable/led-light-bulb1.htm
http://en.wikipedia.org/wiki/LED_circuit
Macaulay, David. The New Way Things Work.Houghton Mifflin Company. Boston. 1998. Page 273.
LED photos
http://www.eyewriter.org/images/data/EW-2_0-manual_grafx/
Facts info
http://www.cheaplightbulbsinc.com/guide/p7-fun-facts-about-light-bulbs.html
http://www.oldchristmastreelights.com/interesting_facts.htm
Facts Photos
http://tanningbeds.mercola.com/
http://www.amazon.com/Mood-Lights-Colorful-Light-Bulbs/dp/B006GWI292
http://www.windowsbygeorge.com/christmas-light-installation-mckinny-frisco-plano-tx.html