• LeatherCrafters' Corner on parchment
• The Outlaw Press on Parchment Making: a detailed look at the process
• Parchment vs. Vellum (discussed by a parchment maker)
• Parchment Making (with photos)

• Manuscript Inks
• Rialto compilation on inks, papers, and writing styles
• Quill Pens
• The Write Stuff

• Arabic Calligraphy and some artistic examples
• Arabic Calligraphy: The Art of the Pen

• An Apprentice's Handbook for Illuminated Medieval Manuscripts
• Interpreting Ancient Manuscripts
• Master John the Artificer
• Vellum Gallery

For more sources on manuscripts, paleography, and particular extant codices of the Middle Ages and Renaissance, please go to the Castle Library.