I just stumbled upon this article from seriouseats.com and now I am second guessing myself. You can read the whole article for yourself, and you should because it really has challenged my thinking, but I will summarize what it says. Basically she says that no nitrates added does not mean that it is nitrate free. That most "no nitrate added" hot dogs have celery juice in them which has nitrates in it, so while they aren't straight nitrates added to them, they still have nitrates in them. I am going to have to look into that information some more and figure out exactly what it all means because if she is right, hotdogs like the ones pictured above actually do have nitrates in them even though the label says they don't.
Bottom line, the article made me more aware of the fact that I can't believe something is healthy for my family just because it's labeled organic or bought at a store like Whole Foods. I need to be better about reading labels and learning exactly what it is I am putting in my body and the bodies of my family.