title: Obituary: Saunders Mac Lane (1909-2005).
authors.affiliation: Klaus Peters is at A K Peters Ltd, 888 Worcester Street, Suite 230, Wellesley, Massachusetts 02482-3717, USA. He is the publisher of Saunders Mac Lane - A Mathematical Autobiography, which will appear at the end of May.klaus@akpeters.com.
authors.forename: Klaus
authors.initials: K
authors.lastname: Peters