Contributor(s): David Germano.
If your aim is merely to present THL to others in contexts without the Internet, there are simply ways to show the site. Such methods just offer fixed presentations of predetermined pages, but can be compelling to show the extent and function of THL.
The easiest thing to do is take screen snapshots of various THL pages, caption them with some explanatory text, and then arrange them in a specific sequence using a presentational program like Powerpoint. The limit of these is that are very static.
Another interesting possibility is to use one of the programs that essentially caches Web sites so that you can then run them again on your computer even after disconnected. Again, this will not give you the whole web site in any sense, but if it works properly, it will allow you to reproduce the exact sequence of pages you want to show and provide the illusion of actually browsing a Web site - as long as you are the one in control of the presentation! The illusion of actually browsing the Web is a significant advantage over the use of Powerpoint and screen snapshots. However, in practice, the caching doesn't work for a number of items so you have to see if it works properly for what you are trying to convey.
See, for example, http://amb.vis.ne.jp/mozilla/scrapbook/.
If a given site is not particularly complex, it is also possible that you might be able to download some HTML pages and simply run them offline from your computer using a browser. This is unlikely to work for much data, but if you are trying to simply show a given section of THL and leave an impression on people, it may be of help. The interactivity of it where you can expand and collapse menus, switch between tabs, and so forth can be quite useful in a presentation.
If you don't know how to implement this suggestion, then you need to find someone with more technical capability. If you are a major THL contributor and need this for promotional purposes, contact THL staff to help them appraise what is possible.