BTW, here's a list of presidential rankings by author Ivan Eland (Recarving Rushmore). He refutes the traditional approach of ranking presidents based on charisma and how they dealt with conflict. Under that kind of ranking system, he argues, presidents who are able to completely avoid conflict get ignored by historians. I don't agree 100% with his judgment, but I like his objective...to rank presidents based on how they preserved peace, prosperity, and liberty:
1 John Tyler
2 Grover Cleveland
3 Martin van Buren
4 Rutherford B. Hayes
5 Chester A Artur
6 Warren G Harding
7 George Washington
8 Jimmy Carter
9 Dwight D Eisenhower
10 Calvin Coolidge
11 Bill Clinton
12 John Quincy Adams
13 Zachary Taylor
14 Millard Fillmore
15 Benjamin Harrison
16 Gerald Ford
17 Andrew Johnson
18 Herbert Hoover
19 U.S. Grant
20 William Howard Taft
21 Theodore Roosevelt
22 John Adams
23 James Buchanan
24 Franklin Pierce
25 James Monroe
26 Thomas Jefferson
27 Andrew Jackson
28 James Madison
29 Abraham Lincoln
30 Richard Nixon
31 FDR
32 LBJ
33 George HW Bush
34 Ronald Reagan
35 JFK
36 George W Bush
37 James K Polk
38 William McKinley
39 Harry S. Truman
40 Woodrow Wilson
His book serves as a great reference guide because he breaks down how each president either preserved or diminished peace, prosperity, and liberty.