You can also find a good panaderia at La Michoacana on Blanco south of 410. And you will find a lot of traditional latino products there as well. When I walk in there, I feel like I'm in a tendajo in Matamoros.
Also try the west side, on Commerce and old highway 90, Culebra, Bandera. Here you will find tortillerias, panaderias, carnicerias, vulcanizadoras, etc.
I'm thinking of opening a tortilleria somewhere on the north side but I am still undecided. You can't find any fresh tortillas here.
As for tamales, my mom makes the best tamales and she moved here with us this year.