Proudfit Identified 2 Native Village Sites Inside DC - The 2nd Seems to Be Located on the Grounds of The US National Arboretum

In his 1899 article on Ancient Village Sites in Washington, DC, SV Proudfit said there were 2 sites. One was on the former Carroll Estate, the second "southeast of the Reform School on the Ancostia."

Here's how he marked it on his map:

Based on the topographic maps from the late 1800s, there was a hill, Hickey Hill, around that spot. 

Over the years, the land in that area was farmed in various spots, but largely undeveloped until it was bought in the 1920s to create the US. National Arboretum.

Here's how the area from thia 1890s map corresponds to the current map of the US. National Arb.

During the last week, I've been trying to contact the person at the Arboretum, which is part of the Dept of Agriculture, who is responsible for the archaeology done there.  

More details when I get them!