SE Grand Ave comes from the south then the feeder street swings around to dump northbound traffic here on Union Avenue at Hancock Street. This traffic pattern still holds today but the landscape has changed; only one single-family home still seems to be standing now.
(City of Portland Archives)
Vintage Portland 
The house under (left) the Shell billboard still stands. As does the house far left (only front door/porch visaible). Great photo!
Love the car lot. Cool oval windowed bug.
I don’t think Street View gives you the exact spot but this is pretty close. http://goo.gl/maps/LXxKz