northwest Missouri; southwest Iowa; northeast Kansas; southeast Nebraska

From the look-out point of the Waubonsie State Park in Fremont County, Iowa, you can see the above four states.

Atchison County, Missouri is bordered on the east by Nodaway County and on the south by Holt County, Missouri
Otoe and Nemaha Counties, Nebraska are across the Missouri River to the west of Atchison County, Missouri
Fremont and Page Counties in Iowa border Atchison County, Missouri to the north.
These maps are from the 1950 Edition of the Compton's Pictured Encyclopedia and Fact-Index, volumes I, K, N, and M. The actual maps say that they were "Copyright by C.S. Hammond & Co., N.Y." but do not have a date on them.