Aerial Photo for Linn, Miami Region, locality Blue Mound, Centerville, location T 19-23 S; R 21-22 E, project AXR/AXU. Date of photo 1938-07-12. Other info Linn B. Range of sheets 54B: 47-33, 31-15. Number of sheets 32. Photo is located at T 19-23 S; R 21-22 E