Websites
http://www.webelements.com/
http://en.wikipedia.org/wiki/Electrical_conductivity
http://chemistry.about.com/od/periodictableelements/Periodic_Table_The_Elements.htm
Images
http://periodictable.com/Properties/A/MeltingPoint.st.log.gif
http://chemwiki.ucdavis.edu/@api/deki/files/7593/=Valence_Electrons_final.png
http://preparatorychemistry.com/images/monatomic_ions_PT_CS.jpg
http://3.bp.blogspot.com/_IfHKdZwDktA/TTaWWk0Q9pI/AAAAAAAABuM/1yGjMinAOLU/s1600/Dmitri%2BMendeleev.jpg
http://allperiodictables.com/ClientPages/AAEpages/AAEpix/chancourtois_photo-oval.gif
http://upload.wikimedia.org/wikipedia/commons/thumb/9/90/John_Alexander_Reina_Newlands.jpg/220px-John_Alexander_Reina_Newlands.jpg
http://www.wou.edu/las/physci/ch412/Lothar_meyer.jpg
(All variations of the images of the periodic table were cropped and photoshopped by myself)
Original: http://www.bpc.edu/mathscience/chemistry/images/periodic_table_of_elements.jpg
Books
Will be added soon!
http://www.webelements.com/
http://en.wikipedia.org/wiki/Electrical_conductivity
http://chemistry.about.com/od/periodictableelements/Periodic_Table_The_Elements.htm
Images
http://periodictable.com/Properties/A/MeltingPoint.st.log.gif
http://chemwiki.ucdavis.edu/@api/deki/files/7593/=Valence_Electrons_final.png
http://preparatorychemistry.com/images/monatomic_ions_PT_CS.jpg
http://3.bp.blogspot.com/_IfHKdZwDktA/TTaWWk0Q9pI/AAAAAAAABuM/1yGjMinAOLU/s1600/Dmitri%2BMendeleev.jpg
http://allperiodictables.com/ClientPages/AAEpages/AAEpix/chancourtois_photo-oval.gif
http://upload.wikimedia.org/wikipedia/commons/thumb/9/90/John_Alexander_Reina_Newlands.jpg/220px-John_Alexander_Reina_Newlands.jpg
http://www.wou.edu/las/physci/ch412/Lothar_meyer.jpg
(All variations of the images of the periodic table were cropped and photoshopped by myself)
Original: http://www.bpc.edu/mathscience/chemistry/images/periodic_table_of_elements.jpg
Books
Will be added soon!