General Bibliography
- Piper, Towry - 1911
- Piper, Towry - 1911 (II)
- Piper, Towry - 1911 (III)
- Piper, Towry - 1911 (IV)
- Piper, Towry - 1912
- Piper, Towry - 1912 (II)
- Piper, Towry - 1912 (III)
- Piper, Towry - 1912 (IV)
- Piper, Towry - 1913
- Piper, Towry - 1913 (II)
- Piper, Towry - 1913 (II)
- Piper, Towry - 1914
- Piper, Towry - 1914 (II)
- Piper, Towry - 1914 (III)
- Piper, Towry - 1914 (III)
- Piper, Towry - 1915
- Piper, Towry - 1917
- Piper, Towry - 1917 (II)
- Piper, Towry - 1917 (III)
- Piper, Towry - 1922