(IL-58-03) SE of Oreana, Whitmore Township, Macon County, IL. CR20 E. 0.25 miles from jct with IL48 in Oreana, S. on Prairie Rd. 1.4 miles, E. on Kirby Rd. 1.6 miles to the building on the N. side of the road at 7274. (N39 55.529 W88 50.184) Photo 6-29-03.