It seems there is no widescreen edition of Balto on DVD, and the BD is still TBA... waiting for confirmation!
Edit: answer found here - so, there is NO US widescreen DVD, while we in Europe are lucky enough to have it, plus it's PAL with more resolution... it should be anamorphic, can't remember, with english, italian, spanish and portoguese soundtracks, plus a trailer and a documentary, all things not present in the US DVD... any interest in a preservation?