Wisconsin is made up of 72 counties, this cache is focused on Winnebago county. Winnebago County is a county in the U.S. state of Wisconsin. As of the 2010 census, the population was 166,994. Its county seat is Oshkosh. Winnebago County comprises the Oshkosh-Neenah, WI Metropolitan Statistical Area, which is included in the Appleton-Oshkosh-Neenah, WI Combined Statistical Area. Here are a few stats about Winnebago County, courtesy of Wikipedia. You can learn more about Winnebago county at: https://en.wikipedia.org/wiki/Winnebago_County,_Wisconsin
This county's oldest geocache is GC2875 Waukau Creek Walk, placed by supercruiser.
You will find this cache at N44 33.ABC W90 03.DEF
A: The larger number of the two Congressional districts.
B: This county has 4B4 sq mi of land.
C: The smaller number of the two Congressional districts.
D: Winnebago County is governed by the YZ-member Winnebago County Board of Supervisors. Y+Z=D
E: This county's oldest geocache is GC287E Waukau Creek Walk.
F: The county seat, Oshkosh, was incorporated as a city in 185F.
SOURCE: Most of the information on this page was obtained from Wikipedia's page about this Wisconsin county.
CHECK SUM: A+B+C=17 D+E+F=17