More sub categories:
Postcard Alphonse Mucha - The seasons: spring, summer, ...
Postcard Vincent van Gogh - Still Life: Vase with Twelve Sunflowers
Postcard John Singer Sargent - Simplon Pass: The Tease
Postcard John Singer Sargent - Carnation Lily Lily Rose
Postcard John Singer Sargent - Fishing for Oysters at Cancale
Postcard Vincent van Gogh - Olive Grove
Postcard Vincent van Gogh - Butcher seen through a window
Postcard Auguste Renoir - The Oarsman's Lunch
Postcard Vincent van Gogh - Fishing Boats on the beach at Saintes-Maries
Postcard Vincent van Gogh - View of Saintes-Maries
Postcard William Orpen - Grace reading at Howth Bay
Postcard Auguste Renoir - Bal au Moulin de la Galette
Postcard Pau Klee - Magic trick
Postcard Carl Larsson - Lisbeth mit Pfingstrosen
Postcard Katsushika Hokusai (1760-1849) - plum blossom and the moon
Postcard Paul Klee - Senecio head of old man
Postcard Hokusai - Stürmisches Meer
Postcard Robert Delaunay - Poring
Frida Kahlo - Self-Portrait with Monkey
postcards Frida Kahlo - The Two Fridas