Years flown: 1859-1861

Presidents: James Buchanan (1857-1861), Abraham Lincoln (1861-1865)

State added: Oregon

The 33 star flag became the Official United States Flag on July 4th, 1859. A star was added for the admission of Oregon (February 14, 1859) and was to last for 2 years. The two presidents to serve under this flag were James Buchanan (1857-1861) and Abraham Lincoln (1861-1865).

The Fort Sumter Flag is a historic  US flag with a distinctive,  diamond-shaped pattern of 33 stars. When the main flag pole was felled by a shot during the bombardment of Fort Sumter by Confederate forces, Second Lieutenant Norman J Hall rushed to retrieve the flag and remount it on a makeshift pole. The flag was lowered by Major Robert Anderson on April 14, 1861 when he surrendered Fort Sumter, in the harbor of Charleston, South Carolina, at the outset of the American Civil War.

After a patriotic rally in New York City, where Major Anderson had the flag on display. The flag travelled from city to city and was "auctioned" to help raise money for the war effort. The person who bid the highest got the flag and then put it back up for auction to continue raising money. The flag became known as a patriotic symbol for the North during the war. 

Four years after the surrender of Fort Sumter, Major Anderson, now retired major general raised the flag in triumph over the battered remains of the fort. He was quoted to say "I thank God that I have lived to see this day."

 References:

https://en.wikipedia.org/wiki/Fort_Sumter_Flag https://en.wikipedia.org/wiki/Flag_of_the_United_States

https://www.whitehouse.gov/about-the-white-house/presidents/