Thank you for the helpful information. I was also hoping that someone from Bachmann would have added a  comment being that the caboose in question is one of their products.

This is my first year into model railroading. I received numerous items of N scale as a gift. I built the maximum size platform I could, then laid track per a model railroad diagram. Since I have items from several manufacturers, I decided to catalog all rolling stock so the engines will be pulling cars of the similar period. I didn't have a caboose in the collection, so I purchased a Bachmann item #70768 (CSX 3456). Can anyone tell me;
    1. Where I can find that this road number (3456) was an actual number used by CSX?
    2. Where can I find the history of this caboose that is, where built, original owner, etc.?