Before Bill Gates and Elon Musk, there was John D. Rockefeller. Born in New York, Rockefeller began his career as a bookkeeper in Ohio and eventually entered the oil business. In 1870, he founded the Standard Oil Company and, through innovative practices, made energy more affordable for millions of Americans. By the end of his life, he was the richest man in modern history. In this biographical book, we cover how he became one of history's most successful businessmen.

Created for children in 3rd through 5th grade, PragerU’s beautifully illustrated biographical books are packed with facts and fun to teach elementary students about important figures often mischaracterized or forgotten in today’s classrooms.