OMG people! Collectors would have a fit if they thought you were even questioning keeping boxes! Sometimes the boxes are more valuable than what’s inside! Please don’t affix anything to a box! Any alterations to boxes decreases their value. Would suggest using a strip of very lightweight card stock, say 8-1/2″ X 2″ (depending on the depth of the box) and write all cataloguing/archiving info on the end of the strip. Hold the strip on the edge of the box and then place the lid on so that the ID part of the strip sticks outside of the box. Local train collectors tell me don’t stack boxes horizontally on top of each other. Better to store them vertically like books.