Each year we issue a holiday book as a greeting to clients and colleagues. The partners take turns researching and designing these books, which usually contain some kind of game or activity. A Number of Numbers features seven numerical systems, from simple tallying to the Burmese system consisting mostly of circles. Each system is accompanied by an explanation and a challenge, with the answers in the back. 32 pages, 4 x 5, 4-color plus 2 PMS, sewn.