Dear Colleagues, I am pleased to announce the publication of the following book: Category Theory by Steve Awodey Oxford Logic Guides 49 Oxford University Press 2006 This introductory text is designed for advanced undergraduates and beginning graduate students in Mathematics, Computer Science, and Logic. It derives from my lecture notes for a one semester, introductory course. I hope you might find it useful for teaching a similar course or as a reference for your students. For more information, please see: http://www.oup.co.uk/isbn/0-19-856861-4 Sincerely, Steve