2021 marks the 30th anniversary of Dana Tomlin’s appointment to the faculty at the University of Pennsylvania’s Weitzman School of Design. This virtual event brings together past and present colleagues and former students to celebrate the many ways in which Tomlin, who became professor emeritus of landscape architecture in July, advanced the development and application of geographic information systems, and the careers of hundreds of leading academics and practitioners including; Anne Whiston Spirn (MLA‘74), Cecil and Ida Green Distinguished Professor of Landscape Architecture and Planning, MIT; Stephen Ervin, Assistant Dean for Information Technology, Harvard Graduate School of Design; Karen C. Seto, Frederick C. Hixon Professor of Geography & Urbanization Science, Yale University; Robert Cheetham (MLA‘97), President and CEO, Azavea; Molly Burhans, Founder and Executive Director, GoodLands; Jack Dangermond, Founder and President, Esri.