Michel Janssen, University of Minnesota Tate Laboratory of Physics, Minneapolis, Minnesota, USAJürgen Renn, Max-Planck-Institut für Wissenschaftsgeschichte, Berlin, Germany

“This wonderful book is not a book to read! It is a book to be used. It is a tool that could help a great number of people to understand general relativity more deeply and to apply it. … This book should figure in the library of anyone working on relativity, remembering that it also contains an important bibliography … also containing important texts linked to that development.” (Patricia Radelet-de Grave, Mathematical Reviews, May, 2023)

• Part I Essay.- 1 Overview of the contents of this volume.- 2 From the Entwurf field equations to the Einstein field equations: a first pass.- 3 The Zurich Notebook: How Einstein found the Entwurf field equations.- 4 Consolidating the Entwurf Theory.- 5 The Entwurf field Equations as the scaffold for the Einstein field equations.- 6 Mercury's perihelion: From 18'' in the Entwurf theory to 43'' in general relativity.- 7 Beyond the search for field equations.- Part II Sources.- 1 The Zurich Notebook (1912-13).- 2 The Einstein-Besso Manuscript (1913).- 3 "Formale Grundlage ..." (November 1914).- 4 Einstein to Freundlich, September 30, 1915.- 5 Einstein to Lorenz, October 12, 1915.- 6 The November 1915 Papers.- 7 Einstein to Sommerfeld, November 28, 1915.- 8 Einstein to Ehrenfest, January, 1916.- 9 "Die Grundlage ..." (May 1916).- 10 "Hamiltonsches Prinzip ..." (November 1916).

Michel Janssen, University of Minnesota Tate Laboratory of Physics, Minneapolis, Minnesota, USAJürgen Renn, Max-Planck-Institut für Wissenschaftsgeschichte, Berlin, Germany

“This wonderful book is not a book to read! It is a book to be used. It is a tool that could help a great number of people to understand general relativity more deeply and to apply it. … This book should figure in the library of anyone working on relativity, remembering that it also contains an important bibliography … also containing important texts linked to that development.” (Patricia Radelet-de Grave, Mathematical Reviews, May, 2023)

• Part I Essay.- 1 Overview of the contents of this volume.- 2 From the Entwurf field equations to the Einstein field equations: a first pass.- 3 The Zurich Notebook: How Einstein found the Entwurf field equations.- 4 Consolidating the Entwurf Theory.- 5 The Entwurf field Equations as the scaffold for the Einstein field equations.- 6 Mercury's perihelion: From 18'' in the Entwurf theory to 43'' in general relativity.- 7 Beyond the search for field equations.- Part II Sources.- 1 The Zurich Notebook (1912-13).- 2 The Einstein-Besso Manuscript (1913).- 3 "Formale Grundlage ..." (November 1914).- 4 Einstein to Freundlich, September 30, 1915.- 5 Einstein to Lorenz, October 12, 1915.- 6 The November 1915 Papers.- 7 Einstein to Sommerfeld, November 28, 1915.- 8 Einstein to Ehrenfest, January, 1916.- 9 "Die Grundlage ..." (May 1916).- 10 "Hamiltonsches Prinzip ..." (November 1916).