I am a little surprised to find Mr. Carpenter used a "Poor Man's Griffin and Howe". I Googled his name out of curosity as to his gun interests and found the following entry, in the family history blog:
"William Kemble Du Pont CARPENTER-11802 was born 27 May 1919 in DE. He died in FL in 1987.
He retired to Florida where he was concidered the richest man there with 333 million. Unknown which date the dollar figure figured."
Maybe he had the money because he didn't buy G&H's...of course he probably had more than 1 rifle!!!!
Here is a 1950 photo at a family reunion, he is on left and the lady in the dark gown is his wife Frances.