This helped as I was able to count off and mark the ones as I went. However I did actually start the game over on a new save file to do it. I used my Memmory card instead of my HD. Loaded fresh at Menu Start.
It was odd as the intel I'd found on my other save file were not there. They must be tied to my Gamercard because they are for an achievement. Interesting.
So if your having trouble even with this wonderful list, try starting over on a new save file. I snagged it on the first playthrough w/o quiting.
-Insert something creative here-
( that doesn't include stats that no one really cares about or some poorly photoshop'd image with your name stuck in it. )