ECU Libraries Catalog
- 1950 to 1954 1
- 1955 to 1959 0
- 1960 to 1964 1
- 1965 to 1969 1
- 1970 to 1974 2
- 1975 to 1979 2
- 1980 to 1984 7
- 1985 to 1989 14
- 1990 to 1994 21
- 1995 to 1999 23
- 2000 to 2004 28
- 2005 to 2009 24
- 2010 to 2014 10
- 2015 to 2019 6
- 2020 to 2022 4