Source: 1870 Winnebago County, Illinois Map, showing former townships of New Milford (annexed 1916) and Guilford (annexed 1929), now part of Rockford Township.
Shirland Township
Winnebago County Townships – 2012 map
Source: Land Atlas and Plat Book Winnebago County Illinois 2012 p3
Winnebago County Townships – [2012]
Source: Winnebago County Land Atlas and Plat Book, Illinois, 2012