Digital Preservation of Geospatial Data. - Julie Sweetkind; Mary Lynette Larsgaard; Tracey Erwin (Libr. Trends, 2006)

The National Geospatial Digital Archives - Collection Development: Lessons Learned. - Tracey Erwin; Julie Sweetkind-Singer; Mary Lynette Larsgaard (Libr. Trends, 2009)