That first link is actually the old DMT World archives
Here is the wayback machine link to the front page of the DMT tribe at Tribe.net.
https://web.archive.org/...0814003425/dmt.tribe.netYou can access most of the information on the dmt tribe via google cache, in order to do so you have to google search the specific topics. For example type "dmt.tribe.net" into google and you should see one of the top few links will be a dmt.tribe.net link (in my case it was "photographs of DMT crystals" you can get a pretty good list of topics by clicking the little "more results from dmt.tribe.net" link. In any case, many of the links will have a little down arrow next to the url, clicking the arrow will give you a "cached" option that will bring up googles cached version of that page.
The psychedelic shamanism book is good, but the one I was recommending was this one:
Ayahuasca Analogues and Plant Based Tryptamines by Jim DeKorneIt's somewhat redundant with the Entheogen Review information, but a bit moar updated and has some novel information.
Enjoy the history lesson.