The extensive Toulouse-Lautrec exhibition at the Kunsthal in Rotterdam of course features many of his famous litograph posters for the Moulin Rouge and Parisian stars of the fin de siècle like Jane Avril and La Goulue.
His intimate paintings and drawings of prostitutes (from the time when he lived in a brothel) are a bit underrepresented. But then there are many of his lesser known drawings and sketches, some of which are little miracles of simplicity, capturing a scene or character in just a few lines and an occasional dash of color. Examples are 'Ta Bouche' and 'Ce qui dit la pluie'.
Charming, too, are his illustrated invitations and menus for private dinner parties. Such as 'Dîner des Tarnais'.
An awesome, reportedly complete archive of 370 high-res Toulouse-Lautrec works can be found here.