1. On December 4, 1931, the New Mexico State Supreme Court ruled that the state's tax law was unconstitutional, as it discriminated against out-of-state corporations. This decision led to significant changes in the state's tax system, and had implications for tax law across the country.

2. December 4, 1948, saw the premiere of the film "The Paleface," starring Bob Hope and Jane Russell. The movie was partially filmed in New Mexico, and helped to establish the state as a popular location for Hollywood productions.

3. On December 4, 1967, the town of Artesia in southeastern New Mexico experienced a magnitude 4.4 earthquake. While relatively minor, the event was notable as one of the few tremors recorded in the region at the time.

4. December 4, 1979, marked the first day of operation for the largest solar power plant in the world at the time, located in Carrizozo, New Mexico. The plant was capable of generating up to 5 megawatts of electricity using solar energy, and helped to promote renewable energy sources during a period of rising oil prices.

5. Finally, December 4 is celebrated each year as "Cookie Day" in New Mexico, with bakers and pastry chefs across the state whipping up their favorite sweets to share with friends and family. From classic chocolate chip to regional favorites like anise-flavored bizcochitos, there's something for every palate on this delicious holiday.