Volumes 40-57 span Thompson's third trip to Africa (1911-1917), and entries tend to be bit longer and more descriptive. On this trip volumes 44-49 were written in diary volumes entitled "Warriors of Africa," whose covers depict African natives, and volumes 52-55 in volumes bearing the title "Empire Exercise," portraying historical events.
The Mary McCornack Thompson Diaries were received by the Rare Book, Manuscript, and Special Collections Library as a gift in 2004. Originally, the papers of Mary McCornack Thompson were at Oberlin College, but were reacquired by the family at an unknown date.
Over 100 diaries written by British and American women who documented their travels to places around the globe, including India, the West Indies, countries in Europe, Africa, and the Middle East, as well as around the United States.