Pen and ink drawing in it’s simplicity has become a favorite medium of mine. Black on white paper. Black, white, and walnut ink on natural paper. These and other works are available to purchase at Fine Art America.
Pen and Ink Drawing of a Shore Bird by Heather Classen 
Pen and Ink Drawing of a Chickadee by Heather Classen 
Ostrich Pen and Ink Drawing by Heather Classen
Pen and Ink Pear by Heather Classen 
Pen and Ink Drawing of Harriet Smithson by Heather Classen 
Pen and Ink Drawing of a Goat by Heather Classen