FURTHER READING
- Avery , G. , Hurly , R. F. , Warner , B. and Warner , N. 1982 . Maclear's Baseline on Grand Parade . Afr. Notes & News , 25 : 12 – 19 .
- Warner , B. 1978 . Maclear's Beacon . J. Mountain Club S. Af. , 81 : 24 – 25 .
- Warner , B. 1979 . Astronomers at the Royal Observatory, Cape of Good Hope Cape Town : Balkema .
- Warner , B. 1983 . Charles Piazzi Smyth, Astronomer-Artist Cape Town : Balkema .