According to Wikipedia,
Martha Alma Wall was an American Christian medical missionary, philosopher, nurse, and author who is best known for her humanitarian work providing health care to lepers in British Nigeria during the 1930s and 1940s with the Sudan Interior Mission . She was born in Hillsboro, Kansas to a traditional Christian family and was a devout member of both the non-denominational Salina Bible Church and the Baptist Women's Union. She became a registered nurse and studied theology at Tabor College before leaving for a medical mission in British Nigeria in 1938. After returning to America, Wall worked as a Clinical Supervisor of Vocational Nurses for Kern General Hospital during the 1950s and as an instructor and director of nursing services for Bakersfield College during the 1960s. Throughout her adult life, she was a dedicated member of the California State Licensed Vocational Nurses Association. Wall is noted as the founder of the Children's Welfare Center at the Katsina Leper Settlement. She documented her missionary work in Sub-Saharan Africa in the book she authored Splinters from an African Log, which was published in 1960.
Martha Wall is affiliated with the following schools: