Reposting happens, we try to keep it to a minimum is all. Were you using the Lat-Long.com site? It got almost all of them. Some of those flat states, like Delaware for instance, have no real peaks, just a gradual increase of altitude away from sea level. Four or five took about as much work as the other 45 or so put together.
Americasroof.com and Highpointers.org are good for extra details, including pictures, from many of the high points. I used them both to help me with Delaware and a couple of others.

Hill