This may be her at FamilySearch.org : United States Census, 1920," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MFKT-BKJ : accessed 29 Dec 2012), Fern I Poole in household of George A Poole, , Clark, Wisconsin; citing enumeration district (ED) , sheet 5B, family 119, NARA microfilm publication T625, FHL microfilm 1821979.
Keep plugging away and good luck.
Keith Baker