I'm about to start DMing a North American-inspired campaign (later period than NC, although using some elements from both that and regular D&D) with my friends, and I've been keeping track of websites that have good images of under-researched topics like native arms and armor beyond stone arrowheads. It occurred to me that it might be useful to some of you all to have something to base descriptions on, so here's a few links:
A good general resource for native characters is http://www.nativetech.org/, which even has guides to actually recreating most of these items with materials you can probably find within an hour's drive in most states.
I'll add more when I have a bit more time, and if there's more interest in what I've found.
Here's a list of films to check out to get one in the mood for Northern Crown. Some of these take place before the time period of the campaign, and some take place after, but other than that, they are appropriate to the setting.
Brothers Grimm (2005)
Sleepy Hollow (1999)
An American Haunting (2005)
Eyes of Fire (1983)
Brotherhood of the Wolf (2001)
Pirates of the Caribbean (2003-2007, trilogy)
The Haunted Palace (1963)
The Princess Bride (1987)
The Crucible (any version)
Treasure Island (any version)
The Adventures of Baron Munchhausen (1988)
Gulliver's Travels (any version)
Mary Shelly's Frankenstein (1994)