ECU Libraries Catalog
- 1957 to 1959 4
- 1960 to 1964 11
- 1965 to 1969 30
- 1970 to 1974 69
- 1975 to 1979 94
- 1980 to 1984 105
- 1985 to 1989 125
- 1990 to 1994 156
- 1995 to 1999 251
- 2000 to 2004 407
- 2005 to 2009 421
- 2010 to 2014 316
- 2015 to 2019 211
- 2020 to 2024 34