History of Thanksgiving:
Prager University Foundation Form 990
Wikipedia: Prager U
Lincoln and Thanksgiving: The Origin of an American Holiday (YouTube Video)
We celebrate Thanksgiving because of this poignant proclamation from Abraham Lincoln
The woman who gave us Thanksgiving
Proclamation of Thanksgiving
History of Black Friday:
NYC Tourist: Macy’s Thanksgiving Day Parade History
Today I Found Out: How the Black Friday Tradition Got Started
Money Crashers: Black Friday History
Business Insiders: Macy’s First Thanksgiving Parade Photos
Huffington Post: Felix the Cat Image
Black Friday Spending