The Van Gogh Museum blog details three versions of Vincent's Bedroom paintings.
What I particularly find interesting is his seemingly casual prowess at creating the sketches in his letters to Theo and Gauguin. How he could basically whisk them off and have them appear so solid is astounding.
From the Van Gogh Museum blog:
Vincent van Gogh considered The bedroom an important painting. In early 1889, Van Gogh returned home from the hospital in Arles. He had been admitted there after his psychological crisis and the injury to his ear. As he wrote to Theo, ‘When I saw my canvases again after my illness, what seemed to me the best was the bedroom.’