History - http://www.furryelephant.com/content/radioactivity/democritus-lavoisier-dalton/
Dalton - http://www.iun.edu/~cpanhd/C101webnotes/composition/dalton.html
Thomson - http://www.aip.org/history/electron/jjthomson.htm
Rutherford- http://micro.magnet.fsu.edu/electromag/java/rutherford/
Bohr- http://www.colorado.edu/physics/2000/quantumzone/bohr.html
Another Video for you to enjoy!