Grumbacher Tips & Techniques - Use a masking fluid such as Miskit Liquid Frisket to shield areas of the painting from overlaid washes. Chartpak Inc. is affiliated with Thalo, LLC
Materials and Methods Matter: Charcoal Drawing Techniques
Materials and Methods Matter: Introduction to Inks and Paper
Dr. Randall Feingold
TICO TORRES
DANIEL STERN
TODD WHITE