How it looks in print

I need some advice about storage of all the multiple copies of magazines that are publishing my illustrations. I guess the easiest way would be to scan all the pages and have them all as pdfs or tiffs. I will also have to invest in a new portfolio case as the old A3 one is way to bulky to store them and not to mention that it is very awkward to carry - I remember too well struggling with it in depths of a Polish winter and at the height of London summer. And apart from all that I definitely need a haircut!
Note that the illustration was used twice - once to illustrate the article, the second time to open the chapter. It makes me wonder should I have been paid twice?