my father in law lost his green card in 1993 and never reported it he cant read or write he lost it overseas and never went back to the states how can i look it up or how can i find out were to look for his green card number and his social security card was also lost.what can i do to look it up.he is now 57 and went to chicago in 1991 and was there only for a couple of months.is there anything we can do????

