31. An Oklahoman farmer during the great dust bowl in 1939.
32. Boys buying flowers in 1908.
33. A Washington, D.C. filling station in 1924.
34. Louis Armstrong practicing backstage in 1946.
35. President Lincoln with Major General McClernand and Allan Pinkerton at Antietam in 1862.
36. A car crash in Washington D.C. around 1921.
37. Unemployed Lumber Worker and His Wife 1939.
38. An RAF pilot getting a haircut while reading a book between missions.
39. Cornell Rowing Team 1907.
40. Brothers Robert Kennedy, Edward “Ted” Kennedy, and John F. Kennedy outside the Oval Office.
Credits: boredomtherapy.com