|Lat 39.182206 & Lon -94.680390, Wikimapia|
The little golden blob is the site of the Wreck of the Arabia
The industrial establishment in lower left hand corner is the Nearman Creek Power Station
The polite thing to do in these cases is to see if this is a known problem, so I go looking and I find someone asking about UTM coordinates. What's UTM? More searching and I find the Universal Transverse Mercator coordinate system. UTM was developed by the United States Army Corps of Engineers in the 1940s. Ah-ha! WW2 field artillery! I love the smell of cordite in the morning.
Calculating the distance between two points on these maps could be performed more easily in the field (using the Pythagorean theorem) than was possible using the trigonometric formulas required [using] latitude and longitude. - Universal Transverse Mercator coordinate systemThe Wikipedia article about UTM has a bunch of complicated math, but no real explanation of what's going on, so more searching. I turn up a NOAA document that sounds promising. It doesn't really help, it's full of jargon, but it does contain this little bit:
Events occurring at Iowa State University, Ames, IA, in the late 1930's and the University of Pennsylvania in the early 1940s would effect nearly everyone in the world in the ensuing decades. These events led to the construction of the first automatic electronic digital computer (EDC), the Atanasoff-Berry Computer (ABC) by John V. Atanasoff and Clifford Berry in 1942. - Geodetic Surveying 1940-1990
|Atanasoff Berry Computer|
|Monument to John Atanasoff in Sofia, Bulgaria|
John Vincent Atanasoff (October 4, 1903 – June 15, 1995) was a Bulgarian-American physicist and inventor. John's paternal grandfather was killed by Ottoman soldiers after the Bulgarian April Uprising.Those Turks always seem to be making trouble.
The Order of Saints Cyril and Methodius, First Class, Bulgaria's highest scientific honor, was bestowed to him in 1970.
In 1990, President George H. W. Bush awarded Atanasoff the United States National Medal of Technology, the highest U.S. honor conferred for achievements related to technological progress. - paraphrased from Wikipedia