Children's books:
- *A Tale of Two Seahorses* (1966)
- *The Sea Lion Who Learned to Laugh* (1967)
- *The Little Boy Who Lived on the Hill* (1968)
- *The Big Dipper* (1969)
- *The Mysterious Visitor* (1970)
Adult books:
- *The Story of the Constitution of the United States of America* (1970)
- *American Women: A Pictorial History* (1971)
- *America's First Ladies* (1973)
- *The Presidents of the United States: A Pictorial History* (1974)
- *Great Moments in American History* (1976)
- *The History of Texas: A Pictorial History* (1977)
Borel has also written for a variety of magazines, including *The Saturday Evening Post*, *Good Housekeeping*, and *Reader's Digest*. She has also been a contributing writer to several newspapers, including the *New York Times* and the *Washington Post*.
Borel was born in San Antonio, Texas. She attended Sarah Lawrence College and Columbia University. She began her writing career in the 1960s, and has continued to write ever since. She currently lives in New York City.