Is it possible to access very old papers, and in English? For example, publications from the late 1800s and early 1900s by Felix Hoppe-Seyler, Friedrich Miescher and Albrecht Kossel.
Some of the older Uni's (like Adelaide) may have some old journals sitting on the shelves in their libraries. And if not, you could try asking a librarian. They might be able to get hold of a copy for you.