ECU Libraries Catalog
- 1947 to 1949 1
- 1950 to 1954 1
- 1955 to 1959 1
- 1960 to 1964 0
- 1965 to 1969 0
- 1970 to 1974 0
- 1975 to 1979 5
- 1980 to 1984 2
- 1985 to 1989 6
- 1990 to 1994 27
- 1995 to 1999 17
- 2000 to 2004 15
- 2005 to 2009 12
- 2010 to 2014 3
- 2015 to 2019 2