Mary Pope Osborne is an American author best known for her popular children's book series, Magic Tree House. Born on May 20, 1949, in Fort Worth, Texas, she has written over 50 books, captivating young readers with her imaginative storytelling and educational themes. Osborne's Magic Tree House series features siblings Jack and Annie who travel through time and space to explore different historical events and cultures. The series has been praised for its ability to engage children in reading while also teaching them about history, science, and geography.