Add historical information links

README.md

@@ -37,6 +37,11 @@ results must be scraped by year.  Changing the year in the URLs alters the resul
 Powerball: https://www.lotto.net/powerball/numbers/1992  
 Mega Millions: https://www.lotto.net/mega-millions/numbers/1996
 
+### Historical Information Sources
+
+- [Mega Millions Wikipedia](https://en.wikipedia.org/wiki/Mega_Millions)
+- [Powerball Wikipedia](https://en.wikipedia.org/wiki/Powerball)
+
 ## Environment Variables
 
 To facilitate environment variables for testing or execution, create a .env file in the root folder of