Annie Heloise Abel (1873-1947) was a history professor. After her marriage she was also known as Annie Heloise Abel-Henderson. One of the ablest women historians of her day, she was an acknowledged expert on the history of British and American policy toward natives. Historians consider her most important work to be the three-volume The Slave Holding Indians. She studied British policy toward natives throughout the British Empire, not just in the new world. She won the Justin Winsor Prize (history) in 1906 for her The History of Events Resulting in Indian Consolidation West of the Mississippi River.