Wow!!!
Am a Lewis and Clark nut &c.&c., and this page is awesome. How in the *hell* do I save a webpage for offline viewing to include all the photos?
On FireFox at least, on the top menu line of the browser, click FILE and then SAVE AS and specify a file name a directory. The browser generates an htm file along with a directory of the same name containing images and/or other support files.
I usually just email the page to myself. It comes with links and all.