English: Map of battlefield core and study areas.

Although the battlefield was surveyed in 1993, the CWSAC did not delineate a Study Area or a Core Area for Glasgow. The ABPP’s new Study Area includes 1) the location of Shelby’s battery on the west side of the Missouri River, 2) Clark’s approach from the south (starting from the position where the Confederates first heard Shelby's guns shelling the town), 3) the main engagement area south of the town, 4) areas of troop movement east and north of town, and 5) the cavalry engagement north of town.

Two Core Areas have been identified. The larger Core Area represents the main area of fighting, which includes the Confederate line of battle and batteries to the south, the fields of fighting to the south and east of the town, and locations where fighting took place within the town itself. This Core Area extends to the west to include the location of Shelby's guns. The second, smaller Core Area represents the location where elements of Hardin’s cavalry defended the northern approach into the town of Glasgow from attacking Confederate horsemen commanded by Colonel Robert Lawther.