Thanks Les, I'll check those links out (I'm guessing the first one is Yaquina Photo's portable darkroom - but I'll check in just a moment), and I'll follow the link. Thanks also for the heads-up on the book, I've got A History Of Photography: From 1839 To The Present, and an early C20th edition of Everyones Guide To Photography but none of them show anything to do with portable darkrooms.

And thanks to everyone for their comments... very helpful LOL.