I'm keen to make some products to sell with map graphics printed on them. As these are physical products (eg tshirt etc) I don't want to include the attribution in the design.
Is there a good source of GIS data available for commerical use without attributions?
Most require some sort of attribution. I'm talking pretty basic data such as country outlines, road lines, but would also love contours, lakes etc.
Free of course would be good.
US property outlines can require attribution