I remember the Robles family very well. My friend Alejandro Trejo lived with them--his grandparents. Last I knew, he was living in Nebraska, I think. If you'll contact me privately, I believe I can provide his address. Or it might be quicker to look him up on Zaba or similar service.
ttexas48 AT yahoo.com
(I don't know how much a problem spam is on this website, so disguised my email very slightly, spelling out the symbol for @.)