From the record
“JF00-072 is a survey monument located at the quadripoint of Republic and Washington counties in Kansas and Jefferson and Thayer counties in Nebraska. The monument marks the intersection of the sixth principal meridian and its baseline, the 40th parallel north; it serves as the initial point of all land surveys in Kansas and Nebraska, as well as most of Wyoming and Colorado, and part of South Dakota.”
Wikipedia article Site No. JF00-072, CC BY-SA 4.0.
One of 11 National Register listings published here for Republic County · listed in 1987 · category: Site.
Sources: the Wikipedia article · the National Register database, National Park Service
