When looking through the 607 "Sunflower" images at Acclaim Images.com this Artist Painting a Field of Sunflowers was a favorite.
All of their pictures are hand picked, availiable in a number of formats, and you can even get custom prints and posters.

Description:
Artist Painting a Field of Sunflowers
Stock photo of a woman artist painting a sunflower field on a summer afternoon.

Some related terms for more images:
massachusetts,  frank vetere,  woman,  newbury,  artist,  field,  sunflower,  afternoon,  blue sky,  painting,  meadow,  new england,  summer,  pasture,  landscape,  northeast,  clouds,  farm,  cloudy,  palatte,  painter,  middle age,