We mourn the loss of Robert A. Pritzker who passed away on October 27th, 2011. His generosity and passion for science supported research programs at the Field Museum. He joined The Board of Trustees in 1983 and served as Chairman from 1988 to 1991 and was elected Life Trustee in 2008. In 2009 his son, Col. James N. Pritzker founded the Robert A. Pritzker Center for Meteoritics and Polar Studies at the Field Museum to honor his father's dedication to the study of the natural world. Robert A. Pritzker's legacy lives on in the Field Museum's quest for understanding our natural history.