This post from the International Business Times highlights a Vatican project to digitise their manuscripts. This is a cool thing as a medieval reenactor, but it is most likely one of the largest collections of historical documents from all over the world. So it makes it a great resource for schools.
In this collection there are a range of Artworks, Illuminations & Manscripts from the 1400s onwards. Of course that are items from Itailian history, along with the Aztec, Japanese, & Herbew cultures.
The Vatican Library Digitization Project part of the Biblioteca Apostolica Vaticana aims to scan, save and distribute these slices of history and have set up a crowdfunding website to aid in this happening. And for €5 a page it’s worth it.