Below I have listed some of the materials I consulted for this project that are freely availble online.
Access on Gallica, the BnF's digital library (find this image of the sack of Caen on page 157v)
Access on the digital library of the Bibliothèque Municipale de Besançon (find this image of the sack of Caen on page 280)
The Online Froissart is an excellent resource with many digitized manuscripts, transcriptions, and translations. Access Here
The Prose Brut is a 14th century chronicle originally written in Anglo-Norman and later translated into Middle English. This version was edited by Friedrich Brie in 1906 and can be found here. The author's recount of the Campaign is located on page 297-299.
Unfortunately I have yet to locate a freely available online version of Jean le Bel's chronicles translated into English. Here, however, is a version in French from 1904: https://babel.hathitrust.org/cgi/pt?id=uga1.32108007703211&seq=9