Aerial Photo for Coffey County, locality Hartford, location T. 20 S., R. 13-17 E., quadrangle Hartford, Ottumwa, New Strawn, Waverly SE, project CF16. Date of photo 1986-03-22. Other info Elevation = 24000?. Range of sheets E321 to 356 (even-numbered). Number of sheets 19. Photo is located at T. 20 S., R. 13-17 E.