Mexican Border Crossing Records by ClairePrechtel-Klusken; NFU@JosephPuentes.com

Her second message was a power house presentation on the subject of
one of her main work projects at the National Archives, "Mexican
Border Crossing Records." I'm sure you will all agree that these
two messages are worth their weight in gold especially if you are
just starting off in Genealogy or have hit a brick wall because you
don't know "where" in Mexico your family came from. If the latter
is your situation there is a strong chance you can find the
information you need to get started in the many rolls of "Mexican
Border Crossing Record" films that NARA owns. The website
associated with Archivist Claire Prechtel-Kluskens' presentation
is:
http://www.archives.gov/genealogy/immigration/border-mexico.html