I'll be there , if I can swing it. What species tree?
"Patapsco Valley State Park is Maryland's oldest, dating from the creation of the Patapsco Forest Preserve in 1907 with a donation of 43 acres by John Glenn. At that time, much of this valley known as "the river of history" had been denuded of trees in support of agriculture and various industries over the years. With additional donations and purchases over the years, the park now encompasses about 15,000 acres and well-established second-growth forests."
'The area actually didn't become a state park until 1937, but in 1907 it was designated a Forest Preserve. This implies to me that the 43 acres donated at that time were forested - I am not sure how old the trees were at that time, whether they were primary forest or second growth, but that was 100 years ago. If sections of this original tract were not harvested since 1907 (maybe they were), there may be a patch of old growth or some pretty mature second growth by now.'
-(found on the ENTs site)