Actually as a former gymnast and coach I recommend ebay, snowleotards, elitesportswear, and foxysfitnessfashions for leotards!
Don't you mean Brattleboro, VT. I don't know of a Brattleboro NH.
The first thing you need to do is figure out which Manchester they are buried in. Are they in
or one of the numerous other places around the world called Manchester?
In many states juvenile records are marked confidential after the defendant turns eighteen and are only accessible under certain circumstances; however, the conviction is not "taken off" of your record.
The US Genealogical web sites can be a big help. If you know the specific county, that can make it much easier. Most county sites have a full listing of cemeteries and some even list all of the interments.