Census and City Directory Information found at Tiffin-Seneca Public Library includes:
 
Seneca County Census
1830, 1840, 1850, 1860,1870,1880,1900,1910,1920,1930 (on microfilm and Ancestry Plus)

Tiffin City Directories
1859-2003    (Includes most, but not all years)

Fostoria City Directories
1874- 2003  (Includes most, but not all years)

Farm Journal Rural Directories
1916- 2000

New Riegel Yearbooks
1968- 1969- 19791- 1972- 1973- 1975- 1976- 1977- 1981

Old Fort Yearbooks
1953- 1955- 1958- 1965- 1974- 1975- 1977- 1978- 1980- 1982

Hopewell- Loudon Yearbooks
1952- 1953 –1982- 1983- 1984

Columbian High School Yearbooks
1917-2000     (Most Years)

Calvert High School Yearbooks
1936-2000     (Most Years)

Booklets

- One Hundred Years- A Pictorial Guide of Old Fort’s Early Years
- Historic Monuments and Landmarks of Tiffin
- 1822-1897 Tiffin’s Seventy-fifth Anniversary Souvenir
- 1817-1967- Tiffin-Seneca Sesquicentennial
- Second, Third and Fourth Annual Heritage Festival 1817-1981
- Legend of St. Ursula- Golden Jubilee Year- Ursuline Convent
- Ft. Seneca Sesquicentennial  1836-1986