http://chemwiki.ucdavis.edu/Physical_Chemistry/Atomic_Theory/Atomic_Theory#Dalton's_Atomic_Theory
http://www.chemheritage.org/discover/online-resources/chemistry-in-history/themes/the-path-to-the-periodic-table/dalton.aspx
http://antoine.frostburg.edu/chem/senese/101/atoms/dalton-postulates.shtml
http://www.biography.com/people/john-dalton-9265201#synopsis
periodic table-
http://www.bpc.edu/mathscience/chemistry/history_of_the_periodic_table.html
http://www.chemheritage.org/discover/online-resources/chemistry-in-history/themes/the-path-to-the-periodic-table/
http://www.rsc.org/periodic-table/history/about
http://www.chemheritage.org/discover/online-resources/chemistry-in-history/themes/the-path-to-the-periodic-table/dalton.aspx
http://antoine.frostburg.edu/chem/senese/101/atoms/dalton-postulates.shtml
http://www.biography.com/people/john-dalton-9265201#synopsis
periodic table-
http://www.bpc.edu/mathscience/chemistry/history_of_the_periodic_table.html
http://www.chemheritage.org/discover/online-resources/chemistry-in-history/themes/the-path-to-the-periodic-table/
http://www.rsc.org/periodic-table/history/about