| WOODROWWILSON | Only US president to earn a Ph.D. (7,6) |
| MARIE | ___ Maynard Daly, the first African American woman to earn a Ph.D. in chemistry |
| JFK | Only US president to receive both a Purple Heart and a Pulitzer Prize |
| JAMESMONROE | Third of three founding fathers to die on July 4th, and the only US President to have a foreign capital named for him (Liberia) |
| GROVERCLEVELAND | The only US President to serve two, non-consecutive terms of office (actually winning the popular vote three times in a row) |
| NIXON | The only US president to resign |
| RICHARDNIXON | The only US president to have resigned from office (7,5) |
| FDR | Only US president to serve more than two terms, for short |
| OBAMA | Only US president to win the popular vote twice in the 21st century |
| JOHNFKENNEDY | The only US president to be awarded the Purple Heart (4,1,7) |
| LINCOLN | The only US president to have been born in Kentucky (7) |
| ITSELEMENTARY | "This doesn't exactly require a Ph.D." |
| CHOREOGRAPHER | One developing steps to earn a living (13) |
| GERALDFORD | The only US President never to have been elected as president or vicepresident (6,4) |
| REAGAN | Only US president with a star on the Hollywood Walk of Fame |
| CLEVELAND | Only US president elected to two non-consecutive terms, Grover ... |
| POLKA | Steps taken to get a US president to the front? |
| DAD | The second US president, to the sixth US president |
| YALE | First US university to award a Ph.D. |
| DRAPER | How to address a mimic with a Ph.D. |
