Many years ago, about august 26 1997,I have recieved a CD from U.S. Geological survey, it was some high quality map pictures, I still recall there are some description:

U.S. Geological Survey--No warranty is expressed or implied regarding the utility of this data product. If this product is unreadable or damaged in shipment, it must be returned for credit or replacement withion 90 days from the date of shipment to: U.S. Geological survey, Eros data center, customer relations, Sioux Falls, SD 57198.

Order#0119708260051

DAAC GTOPO30

CD1 CD3222