John Campbell Craddock (1930-2006), best known as “Cam”, was one of first geology grantees funded by NSF for work in Antarctica following the IGY (geology was not one of the sciences in IGY). In the 1959-1960 field seasons Cam along with two students made the first of his 10 trips to the continent. During that season he joined Ed Thiel for an airborne traverse along 88º W and then joined an icebreaker cruise in the Bellingshausen Sea that included a visit to Peter I Island. Best known for the studies in the Ellsworth Mountains, Cam was also active on committees, both national and international, related to Antarctic science and mapping. Over 100 of his publications and abstracts deal with various aspects of his Antarctic studies. Field work in Alaska and Svalbard followed his Antarctic work. Craddock Massif and Mount Craddock in the Sentinel Range of the Ellsworth Mountains bear his name.