[2]Ingalls was born on September 6, 1842, in Harrison, Maine, where he worked on the family farm until he began teaching at the age of 16.

[1] On July 11, 1914, Ingalls died at his summer home in Hot Springs, Virginia, from heart disease after undergoing treatment for an ulcerated tooth.

[4] Ingalls also organized the Joint Traffic Association, which was shut down by the United States Supreme Court[8] and co-founded the Cincinnati Technical School.

[4] He financed the construction of the Ingalls Building in Cincinnati, which was the world's first reinforced concrete skyscraper in 1903.

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