ECU Libraries Catalog
- 1946 to 1949 86
- 1950 to 1954 140
- 1955 to 1959 196
- 1960 to 1964 266
- 1965 to 1969 283
- 1970 to 1974 317
- 1975 to 1979 370
- 1980 to 1984 522
- 1985 to 1989 885
- 1990 to 1994 1,221
- 1995 to 1999 1,752
- 2000 to 2004 2,168
- 2005 to 2009 2,340
- 2010 to 2014 1,783
- 2015 to 2019 987