Alessandro Volta and the electric battery: Full text online of a book by Bern Dibner on the invention of the battery and the discovery of electric current.
Historical Beginnings of Theories of Electricity and Magnetism: A lecture from professor Michael Fowler at U of Virginia. Long and detailed.
History: A time line of the development of electromagnetism from 900 BC to 1905.
Sketches of the History of Electromagnetics: Timeline of classical electromagnetism, including optics, magnetism, electricity and their unification.
Tesla Files: A brief description of Tesla, his life, and his works.
The Great Magnet, the Earth: Commemorating the 400th anniversary of "De Magnete" by William Gilbert of Colchester.