For many years Howard Eves, famed historian of mathematics and master teacher, collected stories and anecdotes about mathematics and mathematicians. He gathered them together in six Mathematical Circles books. Thousands of teachers of mathematics have read these stories and anecdotes fro their own enjoyment and used them in the classroom- to add spice and entertainment, to introduce a human element, to inspire the student, and to forge some links of cultural history. Through a special arrangement with Professor Eves, the MAA is proud to reissue all six of the Mathematical Circles books in this three-volume edition. In Mathematical Circles, the first two books were published to acclaim in 1969. They are bound together here as volume I of the Mathematical Circles Collection.