Anna Koster

Anna Koster has enjoyed a full life focused on art. In 1976, she had the opportunity to serve as Georgia O’Keeffe’s weekend companion. She went on to earn a Master of Fine Arts degree and teach at the Community College of Denver, San Jose Museum Art School, and other venues through the 1980s. At the same time, her career as an artist progressed with solo and group shows. Then she began working in art museums, completing a 35-year career in California, with the final 15 years at Stanford University’s Cantor Arts Center.

She has been leading workshops at Ghost Ranch since 2014. In recent years, the Georgia O’Keeffe Museum (Santa Fe), Nevada Museum of Art (Reno), and the Palo Alto Art Center (California) have offered Anna’s classes. Her positive, affirming approach to teaching, combined with insights from O’Keeffe’s art and life have earned praise from participants: “uplifting,” “inspiring,” and “amazing.” See more at annakoster.com/testimonials.

Anna’s own work includes super-realistic and trompe l’oeil (trick-the-eye) painting as well as drawing and conceptual art projects. Visit www.annakoster.com to view Anna’s art; her resume is at annakoster.com/resume.

Upcoming Programs by Anna Koster

Practically Painting with O’Keeffe

September 20 - 26, 2026

Experience an unparalleled adventure in the landscape that inspired Georgia O’Keeffe, As we walk in her footsteps — literally and figuratively- the instructor will explain the philosophy that guided O’Keeffe’s painting and lead you through steps that she used to “fill a space in a beautiful way.” We will focus on the compositional elements of […]