Update: The email I sent to Dale Gray came back as not valid. I contacted the Corvette Museum and emailed:
Leah W. Craig, Manager of Collections and Educational Programming
National Corvette Museum
She sent back:
"Hi Mr. Morgan, Betty Hardison, Library & Archives Coordinator says this:
There was a 40th Anniversary Registry and once the information was gathered Keith was going to share it with the museum. This never happened. Keith and his wife, Kathy, are lifetime members of the museum and Dale Gray is also a lifetime member."
I asked if she could email Keith and give him my mail address which she said she would do but I have not heard anything yet.
John
PS: Something else I remembered about Dale Gray, he was a pilot for United Airlines.