I visited Seminole several times in the 1980's, but haven't been back since Brian Silva did his "Ross restoration" there. The bunkers they had in the 80's looked a lot more like the 1931 photo, than the bunkers today.
Pete Dye always swore that Dick Wilson changed a lot of the bunkering when the course was put back into play after WW II, but I don't know if Pete ever saw the course before that. [He was born in 1925 in Ohio ... ] Certainly, though, it's possible that the edging of the bunkers changed considerably while the course was out of play for 2-3 years, so it's probable that Wilson had to do a fair amount of work.
I do remember an old article, I think from Silva's restoration, where the superintendent said they found a layer of black soil in some of the bunkers that was from someone growing tomatoes in the bunkers during the war. It struck a chord, because one of my parents' friends from Holland had grown up next to Royal Hague and said they did the same thing there during the Nazi occupation.