Nancy Rosier considers herself a working 21st Century folk artist. As with artists of the 19th Century, she has taught herself her craft, and for over 20 years she has professionally painted theorem paintings.

Rosier’s Bachelor of Science in Education has gone hand-in-hand with her love of informing the public about the little known art of theorem painting (that is, painting framed art with the aid of stencils). Her knowledge of the wide range of historic theorems has come from extensive museum research. She developed her skills and practical expertise in producing the look of antique theorems through old-fashioned trial and error. But her work goes beyond mere duplication of the past. She creates own unique designs to take her art to another level.

Rosier’s work has received national acclaim. She has been interviewed by newspapers and national magazines. In addition, she has written numerous articles on the art of theorem painting, she gives lectures and demonstrations at Colonial Williamsburg, and was asked by the White House to create a theorem ornament for the Blue Room Christmas tree. For over twenty years she had been juried into the Directory of Traditional American Crafts, the aim of which has been to preserve America’s heritage. Her work has been consistently exhibited at fine shows throughout the country.