Rockville library books due in 1973 and 1974 were found years after parents' deaths, so their son paid the estimated $1,552 fine.Library books checked out in 1973 and 1974 were found by the adult children of a couple who had lived in Rockville decades ago. At 5 cents a day, the overdue fine for the two books would be a whopping $1,552 — which the family paid to make things right. Montgomery County Public Libraries’ Director Parker Hamilton said the rare donation sent to the library system in a letter will benefit many users. "People do not have to fess...