I first met Tim Costello around 1969 and we were friends and collaborators for the next forty years. We collaborated on the books Root & Branch: The Rise of the Workers’ Movements; Building Bridges; Global Village or Global Pillage; and Globalization from Below. We also collaborated on such projects as Root and Branch, the North American Federation for Fair Employment; Global Labor Strategies; and the Labor Network for Sustainability. An astonishing range of people from all over the world wrote in to contribute to a memorial web page for Tim.