I don’t think you can copyright a projection. Jon Jablonski Spatial Data Librarian, Map & Imagery Lab Interim Director, Interdisciplinary Research Collaboratory 805-893-4049 UCSB Library > On Nov 7, 2016, at 1:37 PM, George Carhart <[log in to unmask]> wrote: > > can anyone tell me the best way to find a list of copyright dates for world map projections developed in the 20th century. > > Thanks > George Carhart > > -- > > --------------------------- > Dr. George S. Carhart, Ph.D > Historian of Cartography > and Early Modern Europe > Antiquarian Map Consultant > Historic Research Consultant > > 7 Lafayette Street > Portland > ME, 04101 > USA > (207) 766-1517 >