Every page of National Geographic from 1888 to 2008, including all articles and photographs, is now available for purchase on one light-weight hard drive.
While having the entire magazine collection would fill your shelves with that cheery yellow color, this is probably a better option for travelers. National Geographic has collected all of their writing, photos, maps, even the accompanying advertisements, digitally reproduced in high resolution on a 3″ x 5″ hard drive.