Introduction.- Part I: At the Limits of the Classical Worldview.- Theories of Gravitation in the Twilight of Classical Physics / J. Renn and M. Schemmel.- The Newtonian Theory of Light Propagation / J. Eisenstaedt.- Mach and Einstein, or, Clearing Troubled Waters in the History of Science / G. Wolters.- Part II: Contexts of the Relativity Revolution.- Tilling the Seedbed of Einstein's Politics: A Pre-1905 Harbinger? / R. Schulmann.- The Early Reception...