My Strange Brain
A few minutes ago I filed something in my file cabinet. In doing so I came across a folder labeled "Northrop Corp./consulting". I did some contract software work at Northrop (now Northrop Grumman) in the late 1970s. In the folder were a couple of security clearance applications I had filled out, as what I was working on there was DoD stuff.
I looked at an application, which contains among other things all the places I had lived from childhood until that time. A few of them were only a city, saying "address unknown - see employment history" for residence addresses I'd forgotten. One of them was "(address unknown) Alpine Rd, Portola Valley, CA" from when I was in college in the mid-1960s. As soon as I saw that entry, I blurted out "4091 Alpine Road."
I checked using Google Maps, and that street number is in the right place.