Dang, how could I have forgotten Hoyt St.?

Here's a few more locations:

Chehalis, Washington railcar repair facility: 46°38'14.94"N 122°56'14.50"W

Longview Switching Company (If you count having a tail track at the end): 46° 7'6.25"N 122°55'4.32"W

Vancouver, WA: 45°38'9.73"N 122°41'14.29"W (look on the west side of the mainline)

Seattle, WA: 47°35'11.54"N 122°20'14.29"W (Another yard with nothing more than a tail track at the north end that leads nowhere)

Seattle #2: 47°35'6.79"N 122°19'28.34"W (A small set of stub tracks)

Seattle #3: 47°35'10.04"N 122°21'3.96"W (With a carfloat track, too!)

Seattle #4: 47°34'56.09"N 122°22'10.05"W (Examples of both a true stub-end yard, next to a yard with a tail track)

So...not so unprototypical. I've learned that in railroading you can almost always find an example of something you didn't think existed, somewhere. Sometimes they're just not as obvious, since most pepole don't look at railroad facilities the same way one would look at a model railroad.