Picture Chart July 1986 [pdf]
February 15, 1986 [pdf]
July 1, 1985 [pdf]
May 1, 1984 [pdf]
March 1, 1983 [pdf]
Picture Chart with 1981-1983 Changes Noted [pdf]
April 1, 1982 [pdf]
July 15, 1980 [pdf]
July 15, 1979 [pdf]
September 1, 1978 [pdf]
August 15, 1977 [pdf]
July 15, 1976 [pdf]
March 15, 1975 [pdf]
April 1, 1969 [pdf]
January 4, 1965, Research [pdf]