Learn all about - Ada Lovelace and the world's first computer program - Helen Keller and how she overcame her disabilities - Harriet Tubman's inspirational life and work - in this children's biography.

First: Discover the inspiring story of Ada Lovelace, one of the world's first computer scientists!

In 1833, Ada Lovelace met mathematician Charles Babbage, inventor of calculating machines. She went on to devise a way of inputting data into Babbage's Analytical Machine, and in doing so became the first ever computer programmer. In this biography audiobook for seven- to 11-year-olds, learn all about Ada Lovelace's intriguing life, including her talent for languages and mathematics, and her fascination with science.

In the second kids' biography in this bundle, discover the inspiring story of Helen Keller, who overcame the odds by learning to understand and communicate with the world.

Helen Keller lost her sight and hearing due to an early childhood illness and spent the first six years of her life unable to interact with other people. She remained isolated from the outside world until Anne Sullivan came to work as her teacher. In this biography audiobook, learn all about Helen Keller's amazing life and achievements - how she learned to read Braille and speak, go to college, write books, and ultimately revolutionize the world through her activism on behalf of the deaf and blind.

Third: Discover the inspiring story of Harriet Tubman, a fearless activist and abolitionist who helped guide many slaves to freedom.

Born into slavery in the 1820s, Harriet Tubman would later run away and help scores of other African American slaves escape to freedom in the North, using the "Underground Railroad". A nurse, scout, and advisor during the American Civil War, Harriet co-led the Combahee River Raid, in which 700 slaves were liberated. After the war, Harriet became involved in women's suffrage, or the right to vote, and opened a retirement home for sick and elderly African Americans.

Learn all about Harriet Tubman's fascinating life, the hardships she endured, the people she helped and rescued, the battles she fought, and how this American icon of strength continues to inspire so many people today.

This new biography series from DK goes beyond the basic facts to tell the true life stories of history's most interesting people. An age-appropriate text to create an engaging audiobook children will enjoy listening to. This is the one biography series everyone will want to collect.