A great overall view of the history of ink.
A fantastic resource by the Dutch Cultural Heritage’s website that details the history, composition, and conservation issues surrounding iron gall’s use over many centuries.
A fun read on Ben Franklin’s ink experiments.
A teaching kit offered by Yale University Library, the Traveling Scriptorum.
A bit of detail on the overall challenges posed by iron gall ink.
Forty Centuries of Ink by David Nunes Carvalho.
A collection of different ink recipes in translation from Evan Lindquist, artist-printmaker. Lots and lots of recipes for many different types of ink.
A bit of information on iron gall ink and wasps.
Yale University’s Special Collections Preservation Unit publication, Medieval Manuscripts: Some Ink & Pigment Recipes.
A good overview of the damage iron gall ink can do to manuscripts.
An in-depth analysis of iron gall ink examination through non-destructive analytical techniques.