The ridge traveled by this road is named Blackman Ridge in Franklin County, Washington. I’ve searched through all of my sources and cannot find the origin of the name.
Franklin County was established in 1883 with a population less than 700 for the entire area. Since racial demographics seem unkept until the 1970s, I can’t tell if this was named for a black man or was named after someone whose surname was Blackman – though the latter seems the most believable.
There was a man named Chester Blackman (1910-1966) who is buried in the nearby Pasco City View Cemetery. It’s possible that it was named after him. He is the only Blackman in the area.
With nothing else to go on, there’s no way to tell the story.
Curiously, in this “census tract” of Franklin County, there live nearly 1,400 people. Six are black.
‘With Spirit Empty’
Camera: Argus C3 (1953)
Film: Tasma Mikrat 300 (x-06/1974); 6iso
Process: HC-110B; 6.5min
Blackman Ridge Road, Franklin County, Washington