Nobel Media AB
The Nobel Prize: The Nobel Prize in Physics 1905
This Nobel E-Museum website commemorates the work of Philipp von Lenard and his Nobel prize achievement. This detailed resource includes a biography, Lenard's Nobel Lecture, and the "The Nobel Prize in Physics 1905 Presentation Speech."
Internet History Sourcebooks Project
Fordham University: Modern History Sourcebook: Letters on Newton
An interesting site from Fordham University that provides letters Voltaire wrote regarding Newton and his work.