Phillip,
FYI...
Sometimes the historical drawings by golf course architects turn up at random. Despite your flooding issues at Metairie Golf Club, who knows might eventually turn up.
Former prolific posters here on GCA, Tom Paul and Wayne Morrison from Eastern Pennsylvania stumbled upon a barn on Philadelphia's Main Line full of William Flynn's Ardmore, PA architectural drawings and turned it into a book, "the Nature Faker". Sold the originals to the clubs they were designed for.
Not long ago, in Chattanooga, TN, Doug Stein found the original plans for the "Fairyland Golf Club" on top of Lookout mountain, TN which was a Raynor/Banks design in the archives of the downtown construction/engineering firm who built it. The club, now known as Lookout Mountain had no idea and had routinely mowed 25 yard circular target greens on what had been constructed as Biaritz and Redan green complexes. Now the golf course has been corrected to it's original intent per Raynor/Banks.
You never know what might turn up. Ask your membership.