ECU Libraries Catalog
- 1951 to 1954 5
- 1955 to 1959 0
- 1960 to 1964 1
- 1965 to 1969 0
- 1970 to 1974 1
- 1975 to 1979 4
- 1980 to 1984 11
- 1985 to 1989 3
- 1990 to 1994 2
- 1995 to 1999 3
- 2000 to 2004 38
- 2005 to 2009 1,908
- 2010 to 2014 485
- 2015 to 2019 4
- 2020 to 2022 1