ECU Libraries Catalog
- 1875 to 1879 1
- 1880 to 1889 0
- 1890 to 1899 0
- 1900 to 1909 0
- 1910 to 1919 0
- 1920 to 1929 0
- 1930 to 1939 2
- 1940 to 1949 0
- 1950 to 1959 1
- 1960 to 1969 7
- 1970 to 1979 22
- 1980 to 1989 56
- 1990 to 1999 154
- 2000 to 2009 177
- 2010 to 2019 173
- 2020 to 2023 16