[4] One former slave, Fanny, was free after her owners moved out of the state and worked in the town so that she could buy her husband, Stephen, at auction in Missouri.

[4] During the 1840s, Bond County played host to a few people conducting slaves to freedom on the Underground Railroad.

Jones lived in Reno and in 2008, a letter in which he told of his Underground Railroad activities was discovered in a staircase in Sparta.

John Leeper was able to disguise his Underground Railroad activities due to his milling business.

[4] Dr. Henry Perrine practiced medicine near Greenville and helped with the secret railroad activities.

"[3] When Abraham Lincoln and Stephen Douglas gave speeches in Greenville in 1858 during a campaign for the United States Senate, Douglas said: "Ladies and gentlemen it gives me great and supreme gratification and pleasure to see this vast concourse of people assembled to hear me upon this my first visit to Old Bond.

"[3] The Illinois State Register reported of the occasion: "I've seen many gatherings in Old Bond county but I never saw anything equal to this and I never expect to.

[3] On November 21, 1915, the Liberty Bell passed through Greenville on its nationwide tour returning to Pennsylvania from the Panama-Pacific International Exposition in San Francisco.

[3] Ronald Reagan visited Greenville on the campaign trail in the 1980s and gave a speech on the courthouse lawn.

[8] As of the 2020 United States census, there were 16,725 people, 6,359 households, and 4,033 families residing in the county.

Only two Democrats have gained an absolute majority of the county's vote since at least 1880 – Franklin D. Roosevelt in 1932 and Lyndon Johnson in 1964.

Bill Clinton was the last Democrat to win the county, in 1996, though local Senator Barack Obama came within 100-plus votes in 2008.