Csssandra loves pensand her black pen comparison will tell you which archival ink pens are the best!
The unusual suspects — mnmlscholar
Best Archival Inks for Fountain Pens: Your Notes Will Last - One
Pens – Archival Survival
Pigment Pen Comparison (AKA Archival, Waterproof, Felt Tip Pens
Handy Bible-study tool, this four-color pen clicks to give you four colors in one. Orange, Blue, Pink, and Black are medium point underliners; fine
Bible Study Pen (four color inks) Carded
The art of resistance. – Leigh Reyes. My Life As a Verb.
Best Archival Inks for Fountain Pens: Your Notes Will Last - One
Black inks_ Which one?
A Nib by Any Other Number…Is Still Confusing - Vintage Fountain