i'm trying to locate some dates for native american tribes, specifically, when they flourished. at the moment, i'm searching the tlingit, but no luck w/ the date...any sites that would have this kind of info for most native american tribes?

the tlingit are the indigenous people of what is now Canada's Yukon and British Columbia.

A simple Google search for "tlingit" will give you hundreds of pages.
Similar results can be obtained for other native North American tribes.

This site will give you an approximate date for the Tlingit.

http://www.everyculture.com/multi/Sr-Z/Tlingit.html

This is an excellent site on native American tribes.

http://www.nativeculturelinks.com/nations.html

Frankly, I wonder what you mean by flourish? By my understanding, most are in that period now.

The Maya civilization was flourishing when it was destroyed by Spanish disease and war in the late sixteen hundreds.

When researching the historical information and dates of Native American tribes, there are several reliable resources you can use. Here are some websites that can provide you with information on the Tlingit tribe and other Native American tribes:

1. National Museum of the American Indian (NMAI) - The NMAI's website (https://americanindian.si.edu/) provides a wealth of information on various Native American tribes. You can search for specific tribes and access timelines, historical context, and cultural information.

2. Native American Encyclopedia (https://www.nativeamericanencyclopedia.com/) - This website has comprehensive articles on Native American tribes, including information on their history, culture, and important events. Search for the Tlingit tribe to find relevant information.

3. Bureau of Indian Affairs (BIA) - The BIA website (https://www.bia.gov/) offers a section specifically dedicated to tribal information. You can access tribal directories and find contact information for individual tribes. While it may not directly provide historical dates, it can help you connect with tribal offices that might have the information you're looking for.

When using these websites, remember to cross-reference information and verify multiple sources to ensure accuracy. Additionally, consider reaching out to local tribes, cultural centers, or historical societies, as they often have knowledgeable individuals who can assist you in your research.