ECU Libraries Catalog
- 1938 to 1939 1
- 1940 to 1944 1
- 1945 to 1949 0
- 1950 to 1954 1
- 1955 to 1959 0
- 1960 to 1964 0
- 1965 to 1969 1
- 1970 to 1974 1
- 1975 to 1979 0
- 1980 to 1984 5
- 1985 to 1989 7
- 1990 to 1994 3
- 1995 to 1999 12
- 2000 to 2004 6
- 2005 to 2009 3
- 2010 to 2011 1