If you are not aware by now. Along with the new Diamond Mines exhibit at the Hall of Fame comes an online, searchable (albeit slow today, I blame fangraphs) database of scouting reports. There are hours of fun to be had with it. A Bo Jackson scouting report was posted earlier by RoyalsRetro, but there are others of interest. My cynicism drives me to look for failed Royals first rounders in the late 90s/early 00s, for example, the scouting report linked below of Dan Reichert is all but glowing for a 6th overall pick.
The link to the searchable database below. If you find something interesting, please share in the comments. I'm sure there are tons of interesting evaluations of players when they were amateurs. Baseball, especially amateur scouting, is unpredictable after all. That's what makes some of us come back year after year. :D