Pivotal Moments in American History is a 20-book series with 20 released primary works first released in 2001 with contributions by Maury Klein, James T. Patterson, James M. McPherson, Nelson Runger, Glenn C. Altschuler, David Hackett Fischer, John Ferling, Colin G. Calloway, Richard Labunski, Sally G. McMillen, Howard Jones, Elliott West, Lynn Hudson Parsons, Thomas Kessner, Craig L. Symonds, Richard Moe, Emerson W. Baker, David L. Preston, Marc S. Gallicchio, and Samuel G. Freedman.