The Liner Brush Pack for Photoshop - RetroSupply Co.
Sketch A Day: Photoshop & Fresco Brushes — Sketch A Day
3 Ink Brushes for Photoshop by pixelstains on DeviantArt
Ballpoint Fine - Photoshop Ink Brush - Grutbrushes.com
Kyle's New Technical Pens for Photoshop | These new technical pens will be included in my Ultimate Lettering brush set for #Photoshop, which you can preorder now at 25% off the regular