I've been doing a lot of looking and a lot of research on every tower in Indianapolis. Some I definitely know where they are/were, some I have an idea of where they are (at least in the vicinity of where they were), and I have no idea where they are on the others.
I already know where AN (I think it's in the NW corner between the tracks and 267), Belt Crossing, Dale, Davis, DX, IJ, IU, KD, Kraft, MY, and Woods are.
Beech Grove, Churchman AV., Pine, Thorne, and Van Jct., I still need a little help finding them. I think the Tower for Churchman Av. was on the south side of the tracks and on the east side of the street on Churchman.
Brant, BX, East wood, Ft. Benjamin, Glenn, Mass AV., Mt. Jackson and Westfield, I have no idea. I think I found where Westfield may have been. Just south of the town in this new addition where the Monon Trail runs through. Also followed another ROW that slammed right into it, but the picture I found shows them at somewhat of a 90 degree angle. This looks more like a 70 or 80, give or take.