Yours truly, leaning against a sign that welcomes visitors to Oregon. This is on US 199 and is the northbound companion to a nearby ”Welcome to California” sign. Neither this nor the linked sign are on the state line, but this one is pretty close. I base that statement on the placement of the border on my road atlases and in Google Earth.
This border-area photography came to a screeching halt a little later when my D100 camera died. This is explained in the last three photos in this gallery.