One of Rolf Keller’s hobbies was tropical plants. Today it is not difficult to get such plants but in the GDR, it was not easy. He had removed one wall in his appartment and replaced it with a glass cabinett, containing different tropical plants. In several letters, he described how he built this little greenhouse inside his appartment. One of the plants inside it is sketched here, Stephanotis Floribunda, a native of Madagascar. The pencil sketch is dated July 7th, 1959. The caption reads: “Die erste ist soeben duftend erblüht, am Vorabend unserer Wolgareise.” (The first one just opened up with a sweet scent, on the eve of our Wolga trip). The next day, Rolf and Grete Keller would start a trip to Russia, described in a series of letters.