How about this for a rare catch.... A friend fished the upper river many years ago and caught a pink during an even (non-pink) year. It was really a pink since I saw the fish before he released it.
My father used to work for DFO in the 60's and 70's and he told me a story about Pinks.
He said that they attempted to start an even year run of Pinks in Jones Creek.
The Pinks didn't take very well but 2 years later while running a fish wheel above Hope, they caught several Pinks in the wheel.
So maybe the Pinks in the Vedder are strays from Jones Creek.