As a follow up to my posting of Friday, March 18 regarding Bruce McPherson, after a bit more research and per Harry Morgan who works for Sparkman & Stephens and worked here with Bruce, we find design #2250 - Maltese Cat. This 1/2 tonner was designed by Bruce for his own use.
Here is the general arrangement plan.
And here is an article about the boat.
Unfortunately we don't have an image of this boat.