Ancestry's 1908-1922 Hancock County, Illinois Map
There appears however, to be a problem with the maps for Hancock County, Illinois. The site indicates there is a 1908 and a 1922 map included on the site. The title pages make me think it is the same map as do the several township maps I compared.
I think the maps are from 1922 instead of 1908. Speaking from memory, I know there is a early 1920s plat book of Hancock County. Also there are two of my ancestors who should be listed as landowners in any 1908 platbook and they are not listed.