Mike:
Do you have articles on Leeds' expertise that date from the 20th century?
A lot happened in the evolution of American golf architecture between 1899 and 1915.
Sven
Sure thing, Sven thanks.
I didn't find the one in particular I was looking for in a brief search but I think there's a nice sampling below. While I would agree that a lot changed philosophically in terms of architectural thinking in the US (led by Travis, Ross, Macdonald, et.al.) during this period, by 1915 there still was not a lot on the ground reflecting that thinking. NGLA set a high bar and the continued work refining Garden City was meritorious but not much else but those and Myopia had achieved greatness through 1915. Merion was still in a rough, largely unbunkered state, Pine Valley was unfinished and having agronomic difficulties, Lido was not yet open, Oakmont was evolving, Brookline a mixed bag, etc. In nearly all of those cases it was amateurs like Leeds working with their courses over a lengthy period of years effort that eventually achieved excellence.
In any case, by 1916 I believe Leeds was clearly viewed, even by golf experts abroad, as one of the few American "experts" in golf course architecture.
From Walter Travis, Brooklyn Daily Eagle June 14, 1906
From H.J. Whigham, as reprinted in the Brooklyn Daily Eagle, May 30, 1909
From Horace Hutchinson, Asbury Park Press November 14, 1910
From John G. Anderson, NY Sun September 11, 1916
All that being said, I strongly suspect that Ron Whitten and Golf Digest may be correct that the person involved in the second nine was Arthur G. Lockwood. The geography and timing feel right and he's a bit too much of a no-name (these days) for him to have just mistakenly attributed that work in 1916 without some evidence to that effect. I hope we can find his source for that information.