From Mary McDougall:

Thanksgiving Planning:
http://www.drmcdougall.com/misc/2005nl/oct/051000recipes.htm

From Bryanna Grogan:

Vegan Holiday Dinners (including Seitan "Turkey", Pumpkin Pie and Pecan Pie recipes!)
http://www.bryannaclarkgrogan.com/page/page/1435893.htm

Vegan Christmas and Winter Holiday Season Recipes, Links and Resources (includes links to Chistmas Eve/Reveillion and New Year recipes, too)
http://www.bryannaclarkgrogan.com/page/page/1553047.htm

Vegan Hannukah Recipes
http://www.bryannaclarkgrogan.com/page/page/1553225.htm

Vegan Kwanzaa menus and recipes
http://www.bryannaclarkgrogan.com/page/page/1553260.htm

From Marie Oser:

Vegan Thanksgiving
http://www.vegsource.com/articles2/marie_vegan_thanksgiving.htm

On VegSource:

Thanksgiving Recipes
http://www.vegsource.com/thanks.htm

Holiday Recipes:
http://www.vegsource.com/holiday.htm