| Title | Arithmetic of Freemasonry |
| Author | F. de P. Castells |
| Date | 1914 (reprinted 2005) |
| Country | United Kingdom / Canada |
| Type | Pamphlet |
| Length | 32 |
| Description | A deeply esoteric work, dealing with a wide range of topic matter from how ancient civilizations developed systems of counting to the Kabalah and its connection to our Masonic Art. Fascinating and highly recommended. |