Wisconsin is made up of 72 counties, this cache is focused on Door county. Door County is a county in the U.S. state of Wisconsin. As of the 2010 census, the population was 27,785. Its county seat is Sturgeon Bay. The county was created in 1851 and organized in 1861. It is named after the strait between the Door Peninsula and Washington Island. The dangerous passage, which is now scattered with shipwrecks, was known to early French explorers and local Native Americans. Door County is a popular vacation and tourist destination, especially for residents of Wisconsin and Illinois. Here are a few stats about Door County, courtesy of Wikipedia. You can learn more about Door county at: https://en.wikipedia.org/wiki/Door_County,_Wisconsin
This county's oldest geocache is GC65A8 The Ephraim Wetlands Preserve placed by Yawningdog.
You will find this cache at N44 36.ABC W90 05.DEF
A & C: Eagle Bluff Lighthouse was constructed in Peninsula State Park in 1868 on orders from President Andrew Johnson, at a cost of $C2,0A0
B: The oldest geocache is GC6BA8.
D: The 18th and 1Dth centuries saw the immigration and settlement of pioneers, mariners, fishermen and farmers
E & F: In the summer of 1E4F, Fish Creek was the site of a German POW camp
SOURCE: Most of the information on this page was obtained from Wikipedia's page about this Wisconsin county.
CHECK SUM: A+B+C=6 D+E+F=23