(North Side High School, IN-02-02) in Ft. Wayne, Allen County, IN. US27 S. 2.5 miles from jct with I69 exit 111, E. on State Blvd. 0.25 miles, N. on Northside Dr. (just E. of St. Joseph River) 0.1 miles to the school on the E. side of the road. (12-11-02, N41° 05.832', W85° 08.102')
Thanks to Jerry Freeze for this 1946 post card.
A close up of the round building.