The pictures Howie looks at in the darkroom.
The Pictures Lord Summerisle shows Howie.
The Harvest Festival photographs.
Other photos.
It has been said that the George Edwards Sport Shop, which was the location used for the darkroom scene, also shot still pictures used in the movie. I haven't figured out which ones yet but it is possible it could have been the Harvest Festival photographs and the pictures Howie looks at in the darkroom.