Scientific Illustration
all images the copyright of Mary VanSlyke or otherwise privately owned
pen and ink Widow Skimmer Dragonfly cover The Environmental Almanac of Virginia 2nd Edition
pen and ink Cranberry
pen and ink Invasive and Native Species of Presque Isle State Park  
pen and ink  placemat
water color and gouche  Bark Beetle
water color and gouche  Life Cycle of the Cecropia Moth
water color and gouche  Orchid
water color and gouche 
Photoshop   Electrophoresis Poster  
Adobe Illustrator