I grew up in Baldwin Park and ate at #1. I even brought my soon-to-be Mother-In-Law, Mabel Guymon, there on my way to pick up my wedding dress. She loved it! She started her own tradition of eating at In N Out a few miles away from her home near Mar Vista or going to the one near LAX. My husband and kids love it too!
Hector was extremely nice and customer service oriented. The service was as good or better than the food and that is saying something.
Nice place to stop. ..right off the freeway