If your goal is to read The Grapes of Wrath in French, search for Les Raisins de la Colère – you will find many legal copies. If you are trying to recover a quirky underground comic, your best bet is to comb through French BD archives and file-sharing history threads.

Search WorldCat or the BnF catalogue (Bibliothèque nationale de France) for any book containing:

Magalie lives with her parents and her younger brother, Paul. The parents are hardworking but skeptical of modern medicine — the father in particular distrusts doctors, dismissing them as "city charlatans."

Use Google dorks: "les melons de la colère" filetype:pdf "melons de la colère" -raisins -grapes