Does residence on Mercer Island show up in that directory as living in Seattle? If so, and if the cropped pp from the directory are authentic, then the family lived there for that year at least. Or at least he lived there. One wonders why every bit of "evidence" practically is cropped.
iirc the address snips showed his name only, one year in Seattle and one year on Mercer, but I can’t be 100% certain about the addresses, I sent the details to someone...and didn’t keep a copy, and now I can’t recall where they came from, BUT THEY WERE ONLY FOR HIM.
CE LA VIE