A working list of the books I've read so far

Ron Chernow - Washington: A Life
Erica Armstrong Dunbar - Never Caught: The Washington's Relentless Pursuit of Their Runaway Slave Ona Judge
David McCullough - John Adams
Annette Gordon Reed - Most Blessed of the Patriarchs: Thomas Jefferson and the Empire of Imagination
Jon Meacham - Thomas Jefferson: The Art of Power
John Boles - Jefferson: Architect of American Liberty
Dumas Malone - Jefferson the Virginian
Richard Brookhiser - James Madison
Kevin Guzman - James Madison and the Making of America
Harlow Giles Unger - The Last Founding Father: James Monroe and a Nation's Call to Greatness
Fred Kaplan - John Quincy Adams: American Visionary
H.W. Brands - Andrew Jackson: His Life and Times
Jon Meacham - American Lion: Andrew Jackson in the White House
Donald Cole - Martin Van Buren and the American Political System
Gail Collins - William Henry Harrison
Gary May - John Tyler
John Seigenthaler - James K. Polk
Jack Bauer - Zachary Taylor: Soldier, Planter, Statesman of the Old Southwest
Paul Finkelman - Millard Fillmore
Michael Holt - Franklin Pierce
Jean Baker - James Buchanan
Richard Brookhiser - Founder's Son: A Life of Abraham Lincoln
Doris Kearns Goodwin - Team of Rivals: The Political Genius of Abraham Lincoln
David Herber Donald - Lincoln
Hans Trefousse - Andrew Johnson: A Biography
Jean Edward Smith - Grant
Hans Trefousse - Rutherford Hayes
Candice Millard - Destiny of the Republic: A Tale of Madness, Medicine and the Murder of President
Allan Peskin - Garfield
Zachary Karabell - Chester Alan Arthur
Scott Greenberger - The Unexpected President: The Life and Times of Chester A. Arthur
Henry Graff - Grover Cleveland
Charles Calhoun - Benjamin Harrison
Lewis Gould - The Presidency of William McKinley
Edmund Morris - The Rise of Theodore Roosevelt, Theodore Rex, and Colonel Roosevelt
Candice Millard - River of Doubt: Theodore Roosevelt's Darkest Journey
William Hazelgrove - Forging a President: How the Wild West Made Theodore Roosevelt
Doris Kearns Goodwin - The Bully Pulpit: Theodore Roosevelt, William Howard Taft, and the Golden Age of Journalism
Scott Berg - Wilson
John Milton Cooper - Woodrow Wilson: A Biography
John Dean - Warren Harding
Robert Sobel - Coolidge: An American Enigma
William Leuchtenberg - Herbert Hoover
Glen Jeansonne - Herbert Hoover: A Life
Jean Edward Smith - FDR   
Jonathan Alter - The Defining Moment: FDR's Hundred Days and the Triumph of Hope
David McCullough - Truman
Jean Edward Smith - Eisenhower in War and Peace
Robert Dallek - An Unfinished Life: John F. Kennedy, 1917-1963
Robert Caro - The Path to Power
Doris Kearns Goodwin - Lyndon Johnson and the American Dream
Evan Thomas - Being Nixon: A Man Divided
Richard Reeves - President Nixon: Alone in the White House
Barry Werth - 31 Days: Gerald Ford, the Nixon Pardon, and a Government in Crisis
John Robert Greene - The Presidency of Gerald Ford
Julian Zelizer - Jimmy Carter
Burton and Scott Kaufman - The Presidency of James Earl Carter, Jr. 
Lawrence Wright - Thirteen Days in September
Craig Shirley - Reagan Rising: The Decisive Years, 1976-1980
Jacob Weisberg - Ronald Reagan
Henry Olsen - The Working Class Republican: Ronald Reagan and the Return of Blue-Collar Conservatism
Jon Meacham - Destiny and Power: The American Odyssey of George Herbert Walker Bush
Jeffrey A. Engel - When the World Seemed New: George H.W. Bush and the End of the Cold War
Michael Tomasky - Bill Clinton
John Harris - The Survivor: Bill Clinton in the White House
Peter Baker - Days of Fire: Bush and Cheney in the White House
Jean Edward Smith - Bush
David Maraniss - Barack Obama: The Story