Listen to a Kitchen Sisters story on the chili queens.
Read “‘Old Stock’ Tamales and Migrant Tacos: Taste, Authenticity, and the Naturalization of Mexican Food” by Jeffrey Pilcher, which has a good discussion of chili.
Read about the Scoville scale, which is how heat from chilies is measured.
Watch an Austin City Limits episode with Guy Clark where he mentions the Texas Chili Parlor:
Watch perhaps the greatest ever episode of The Simpsons.