Here's a list I've compiled - mostly focused on software driven elections, but with some choice books covering paper ballot fraud. I strongly recommend the history books, tho - something all American voters should be required to read if they want to involve themselves in honest election administration.
Richard Hayes Phillips. Witness to a Crime: A Citizens' Audit of an American Election, Rome, New York: Canterbury Press, 2008.
Mark Crispin Miller. Loser Take All: Election Fraud the Subversion of Democracy 2000-2008, Brooklyn, NY: Ig Publishing, 2008.
Greg Palast. Armed Madhouse: From Baghdad to New Orleans--Sordid Secrets and Strange Tales of a White House Gone Wild, Plume, 2007. And see http://www.gregpalast.com/ Robert F. Kennedy. Was the 2004 Election Stolen? June 1, 2006. This is an 18,000-word investigative report in Rolling Stones Magazine - based mainly on info we uncovered in Ohio which Harvey, Bob and Richard provided to him. When this came out, we election investigators in Ohio sang, "On the Cover of the Rolling Stones" and generally celebrated national exposure of our evidence.
Abbe Waldman DeLozier and Vickie Karp, eds. Hacked! High tech election theft in America, Austin, Texas: Truth Enterprises, 2006.
Robert Fitrakis, Steven Rosenfeld, and Harvey Wasserman. What Happened in Ohio: A Documentary Record of Theft and Fraud in the 2004 Election. Columbus, Ohio: Columbus Institute of Contemporary Journalism (CICJ), 2006.
Greg Palast. Armed Madhouse: Who's Afraid of Osama Wolf?, China Floats, Bush Sinks, The Scheme to Steal '08,No Child's Behind Left, and Other Dispatches from the Front Lines of the Class War, Dutton Adult, 2006.
Fitrakis, Wasserman, and Rosenfeld. Did George W. Bush Steal America's 2004 Election? Ohio's Essential Documents. CICJ, 2005. Fitrakis & Wasserman. How the GOP Stole America's 2004 Election & Is Rigging 2008, Columbus, OH: harveywasserman.com Pub., 2005.
Tracy Campbell. Deliver the Vote: A History of Election Fraud, an American Political Tradition - 1742-2004. New York: Carroll & Graf, 2005.
John Conyers. What Went Wrong in Ohio: The Conyers Report on the 2004 Presidential Election, Academy Chicago Pubs., 2005. (Originally authored by the House Judiciary Committee and published by the Government Printing Office in January 2005; edited and redesigned for mass readability.)
Mark Crispin Miller. Fooled Again: How the Right Stole the 2004 Election and Why They'll Steal the Next One too, Basic Books, 2005.
Bev Harris. Black Box Voting: Ballot Tampering in the 21st Century, Renton, Washington: Talion Publishing, 2004.
Roy Morris, Jr. Fraud of the Century: Rutherford B. Hayes, Samuel Tilden and the stolen election of 1876. Simon & Schuster, 2003.
Mary Kahl. Ballot box 13: How Lyndon Johnson won his 1948 senate race by 87 contested votes. Jefferson, North Carolina: McFarland, 1983.
James and Kenneth Collier. VoteScam: The stealing of America, New York: Victoria House Press, 1996. And I have to add this list of scientific reports:
