When in doubt as to what town belongs in what municipality in Tamaulipas, I like this resource to help me make that determination. I’ll be posting the Nuevo Leon map very soon. You can also make an image by doing a print screen to do an overlay in Google earth if you really need to pinpoint a certain locality. Also it is always good to find the history of the municipality since the lines do tend to move. My major interest is on the municipalities of Guerrero, Mier, Camargo, Gustavo Diaz Ordaz, and Reynosa.
This is the full link it will let you create a PDF file to download:
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