(IL-78-02) NW of Putnam, Senachwine Township, Putnam County, IL. IL29 N. 1.2 miles from jct with CR550N in Putnam, W. on CR665N 1.1 miles, continue W. on CR670N 0.4 miles, continue W. (curves N.) on Poplar Dr. 0.4 miles, sharp right (E. – curves left all the way around the lake) on Lake Thunderbird Dr. 0.8 miles to the house on the S. (left) side of the road at 40 Lake Thunderbird Dr. House can be seen better from the dirt road to “dam & picnic area” on the W. side of the house. (5-22-03, N41° 12.481', W89° 26.209')