Most works by Anne Moore Knapp are signed with SAMK, a throw back to her California art school days when she was known to all by her nickname Sam. She is very involved in the plein air painting movement, and leads a plein air group through Peninsula Art League. The artist feels that her work in plein air has advanced her ability to perceive color and value, to effectively portray shapes through the fall of light on the landscape, and to make quick informed choices in in color and composition. She highly recommends practice in plein air to any artist serious about the landscape. Her involvement in plein air has led her to champion the causes of keeping open spaces, and preserving spots of beauty through parks and trusts for the enjoyment of all.