[1] Botha joined the Cape Colony's civil service in a temporary capacity in 1901, and was appointed to the permanent staff in 1903.
[2] He worked in the office of the Master of the Supreme Court, and passed the Civil Service Law Examination in 1904.
They include The French Refugees (1919), Social Life in Cape Colony in the Eighteenth Century (1926) and Our South Africa, Past and Present (1938).
He was a founding member of the Heraldry Society of Southern Africa, its first chairman from 1953 to 1954, and its honorary life president from 1954 to 1973.
He was married to Olive Stretch Honeyborne, Dorothea Johnson, and Kathleen Helen Gordon Bartlett.