ISearching for Simon

I I am searching for a dog that would have been adopted on or around September 22. 2007 at the main KHS campus during an adoptathon weekend. My dog George (KHS name Arthur) was listed as a border collie mix. His DNA results only list his primary parent as a boxer. We think he is either part border collie or springer spaniel. That would make him either a boxollie or a box spring!! His brother Simon was listed as a labrador mix. He looks all black with a white chest, in the picture. His ID number was 17640 and his microchip number is 494b435a7d. We are only interested in a play date. If you or anyone you know adopted this dog please let me know.