This document summarizes the creation of the September 11 Web Archive by researchers at SUNYIT and the University of Washington Library of Congress. They collected over 28,000 URLs related to September 11 between September 11, 2001 and November 30, 2001. The URLs were then categorized and metadata was added for indexing. Lessons learned included that effective web archives need to have rapid set up and collection processes to respond to significant events and make collections accessible and collaborative.