Genesis and evolution of Weyl's reflections on De Sitter's universe, S. Bergia and L. Mazzoni; the Pensore-Hawking singularity theorems - history and implications, J. Earman; Bondi and the "second way" to cosmology, G. Gale and J. Urani; Einstein, relativity and gravitation research in Vienna before 1938, P. Havas; point coincidences and pointer coincidences - Einstein on the invariant content of space-time theories, D. Howard; rotation as the nemesis of Einstein's "Entwurf" theory, M. Janssen; controversies in the history of the radiation reaction problem in general relativity, D. Kennefic; steady state cosmology and general relativity - reconciliation or conflict?, H. Kragh; the search for gravitational absorption in the early 20th century, R. de Andrade Martins; the cosmological woes of Newtonian gravitation theory, J.D. Norton; heuristics and mathematical representation in Einstein's search for a gravitational field equation, J. Renn and T. Sauer; Einstein and the others - unified field theory between the wars, J. Ritter; Kretschmann's analysis of covariance and relativity principles, R. Rynasiewicz; Larmor versus general relativity, J.M. Sanchez-Ron; Minkowski, mathematicians and the mathematical theory of relativity, S.A. Walter.