Recently, my family and I have been piecing together bits and pieces of my family history. My grandfather died when I was three and my grandmother when I was 8 (same year as my dad), so it's hard to get a clear story of what happened to whom in what year. We were curious about something my grandmother had said when she was alive, so my mom and I sought the truth out.
According to my grandmother, her family moved to Mexico during WWII and she (the youngest daughter) had a working Visa to the United States. This means that, though she lived in Mexico, she could take a train to California, work and make money, and go back home. Her family needed the money badly, so she used to do this- a fifteen year old girl, alone, taking a train into a whole new country to make wages for her family.
Los Angeles has small bits and pieces of history left over, but only if you know where to look for it.
After much driving and searching, my mother and I found it- the old railway station my grandmother took in her youth each week to America.