Each year's file may contain multiple pages from various newspaper sources
1940
1960s: 1967, 1968, 1969
1970s: 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979
1980s: 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989
1990s: 1990, 1991, 1992
