January 13, 2021 NASA’s Artemis program will need lunar spatial reference system By William Tewelow, GISP
May 13, 2020 At-home crowdsourcing and citizen science for mapping enthusiasts By William Tewelow, GISP
August 14, 2019 The story of GIS at DHS: An alphabet soup of progress By William Tewelow, GISP and Nate Smith
