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Andrew Carnegie (1835–1919)

Carnegie was a Scottish-American industry magnate in the 19th century who became one of the wealthiest Americans in history. Later in his life, he became a philanthropist. He founded Carnegie Hall, Carnegie Institution for Science, Carnegie Mellon University, and many other institutions. He was not related to the author. His business acumen and people skills are referenced regularly.

Henry Ford (1863–1947)

Ford was a highly successful businessman who founded the Ford Motor Company in the United States. Ford is mentioned on several occasions as an effective manager/supervisor.

Abraham Lincoln (1809–1865)

Lincoln was the 16th President of the United States from 1861 to 1865. He was president during the American Civil War and was a major figure in the abolition of slavery. He is remembered as an excellent writer and orator.

John D. Rockefeller (1839–1937)

Rockefeller was an American industrialist who became extremely wealthy in the 19th century and later shifted his focus to philanthropy. Rockefeller and his son, John D. Rockefeller, Jr., are mentioned as effective leaders and successful businessmen.

Theodore Roosevelt (1858–1919)

Roosevelt was the 26th President of the United States from 1901 to 1909. As president, “Teddy” often focused on reform trust busting. He is also remembered for establishing national parks. Roosevelt is mentioned throughout the book for his interpersonal skills (which made him very likeable) and his political successes. 

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