From the record
“The Barlow Road is a historic road in what is now the U.S. state of Oregon. It was built in 1846 by Sam Barlow and Philip Foster, with authorization of the Provisional Legislature of Oregon, and served as the last overland segment of the Oregon Trail.”
Wikipedia article Barlow Road, CC BY-SA 4.0.
One of 93 National Register listings published here for Clackamas County · listed in 1992 · category: District.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

