Older, western fur trade era beadwork is generally "simpler" and often used 8/0 or at smallest 10/0 beads.
The "Book of Buckskinning vol 8" has an excellent article on pre-1850 beadwork.
"Arts of Diplomacy", Castle McLaughlin has several pieces of early beadwork
Colin Taylor has a series of books on the Indians, including "Native American Weapons" and several have early samples
"Early Knives & Beaded Sheath of the American Frontier" by John Baldwin
"A Quillwork Companion" and a "A Beadwork Companion" Jean Heinbuch
"Guide to Indian Quillwork" Christy Ann Hensler
websites:
http://www.splendidheritage.com/nindex.html
http://anthro.amnh.org/anthropology/databases/north_public/north_public.htm
http://www.bbhc.org/collections/
My work is mostly western oriented, but there is info on eastern work as well.
re: Braintan being stretchy - I pre-stetch all my hides - dampen with water, and then stretch on a board and leave it that way for 48-72 hours out in the sun and wind if possible......
some sources:
www.braintan.com - they also have an excellent video on BT, tools, and a forum
http://www.braintanninginnovations.com/ - they also have an excellent video on BT
http://www.braintanbuckskin.com/
Don Born - 719-495-8826
dborn@falconbroadband.net - Don sells, deer, elk, and pronghorn
Cones: I buy them pre-made or make them from flattened real tin cans, whihc is what many originals were made from after 1810....