And G.R. Murray's name is included in the above with the architects, Delano & Aldrich, who designed the house.
Also, Steve, below is one of a few articles in papers from 1930 saying that Lindbergh was buying hundreds of acres in that area.
From the Tuesday, November 4, 1930 News-Herald in Franklin, Pennsylvania:
"Princeton, New Jersey -- Charles Lindbergh has bought 532 acres of land on Sorrel Mountain near here, according to G. R. Murray, Princeton realty man who handled the deal. Lindbergh recently acquired a homestead at Lawrenceville, and this new purchase materially increases his holdings."