| John Foster Dulles had an early onset of colon cancer and never became Secretary of State?|| Amos B.|
| The Lewis & Clark expedition had never met Sacagawea?
|| Vikram B.
| There was a thunderstorm on October 14, 1962, and the U-2 spy plane did not see nuclear activity in Cuba?
| Maraya B.
| Henry Clay contracted pneumonia and therefore could not propose the Compromise of 1850?|| Devin C.|
| The Soviet Union had kept their "3 month promise" to the US in 1945?
|| Tad D.
| Robert E. Lee had decided to accept Gen. Winfield Scott's offer from President Lincoln to command the Union army?|| Alex D.|
| Charles Crocker never attended Theodore Judah's presentation about a transcontinental railroad in 1860?|| Pam E.|
| Jerry Parr had not taken the place of his deputy, Johnny Guy, on the morning of March 30, 1981?|| Katie F.|
| Dr. Robert W. Lovett hadn't diagnosed FDR with polio in the summer of 1921?
| Olivia G.
| Secretary of State John Marshall had remembered to mail the commissions for Adams's appointments in 1801?
| Ben G.
| Secretary of State Dean Rusk had supported the provision of Air Force aid during the Bay of Pigs invasion?|| Darby H.|
| Upton Sinclair never wrote "The Jungle?"|| Cameron J.|
| Benjamin Franklin had been blamed for external taxes after the repeal of the Stamp Act?
| Hayley L.
| John Hancock and Samuel Adams decided against ratification of the Constitution?|| Libby M.|
| Margaret Sanger's mother hadn't died of cervical cancer in 1909?|| Natalie N.|
| Elizabeth Cady Stanton had taken her husband's advice in not publishing the Declaration of Sentiments?|| Megha P.|
| Claudette Colvin had not gotten pregnant in 1955?|| Tally P.|
| Robert Morris did not turn down his appointment as Secretary of the Treasury?
|| George R.
| The burglars at Watergate had re-taped the latch of the door vertically, hiding it from the security guard?|| Dennis S.|
| The Army-McCarthy hearings had never been televised?
|| Emmy S.
| Bill Gates gave up computers for good in High School?
|| Vincent S.
| Europeans were devastated by Native American disease in the early 1600s?
| Billy V.-C.
| The woman handcuffed during the Stonewall Inn raid hadn't yelled at the crowd to do something?
|| Erin W.
| Albert Einstein's letter to Franklin D. Roosevelt was intercepted by the Soviet Union in 1939?|| Anisha Z.|