I'm with KSTrapper on this one. Spend enough time in a particular piece of woods--and when dealing with fairly unique antlers to begin with--and I can say in some cases with certainty I've got the same antlers of the same deer in back-to-back years. It's remarkable how the blueprint for those antlers is imprinted in that particular deer.
I've got a pile of about 40-50 antlers or more that are all either matches or else the same deer year after year. I need to put some photos together, but even then the best way to appreciate it and understand it is to have the antlers in hand and be able to fondle them 360 degrees.
Trail cams definitely help in this study. No doubt about it, and the trail cams have solved several mysteries for me when I didn't have the shed antler evidence. I know some dismiss or dislike trail cams (some having never used them), but they are fantastic aids in studying whitetail racks and have never shown me where to hunt.
One (of many) interesting stories was the one I covered in Ch. 1 (Familiar Face) of my book, My Neck of the Woods. In this case, I had trail cam and both sheds from the year before of the buck I killed. I EVEN rattled him in, but not with his own rack from the year before (I hadn't found the second antler yet).
Interesting that I initially saw that buck but he used a trail out of range. As I backtracked that buck later that morning to determine where to set up a stand for a different wind, I found an antler (his from the year before, as it turned out). I then set up a stand, returned, and MISSED him a few days later. Then about Halloween, I rattled him in and killed him from the original spot (literally a few yards from where I'd found his antler). Found the mate to that antler a couple hundred yards away later.
I also had a story on this topic in a PBS Magazine from 2nd Qtr 2009.