NE Mexico genealogy

While this is not included in the Nuestros Ranchos research, I am wondering if anyone out there might know how/where I can contact ALMA ROSA LONGORIA GUZMAN CRUZ, who,
along with her siblings has done extensive genealogy on NE Mexico, more precisely Mier,
Camargo, Guerrero, etc.

Thanks for any information.
Juanita Delgado

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