As a followup to Tuesday's look at Belloq's passport I wanted to offer up the "Passport Stamps and Visas"group on Flickr. It's a fantastic resource for anyone looking to create a prop passport. You'll find hundreds of examples spanning the 20th and 21st centuries from countries around the globe, all sourced from collectors and travelers. The large format pictures make it easy to recreate transit stamps, or even lift them right from the posted images.
As an aside, I've become increasingly leery of recreating accurate official paper. For a film or television series having an accurate recreation of a period document may be important, but for live action games? Not so much. For personal use I think "believable" trumps "accurate". You also avoid the sad reality that a lot of official paper doesn't look nearly as cool as it should. Central Intelligence Agency, I'm looking at you.