(PA-63-04) at Pennsylvania Trolley Museum N. of Washington, Chartiers Township, Washington County, PA. PA18 (Jefferson Av.) NW 0.4 miles from jct with I70 exit 17 in Washington, N. (veer right) on PA18 (Henderson Av.) 0.9 miles, E. on Oak Grove Rd. 0.5 miles, NE (veer left) on Main St. 0.5 miles, S. (right) on Museum Rd. 100 yds to the bldg on the W. side of the road at 1. (N40 12.426 W80 15.287) Photos by Don Johnson 7-27-10.