Rudolf Wunderlich was the co-owner of Kennedy & Company, an art gallery in New York. His grandfather, Hermann Wunderlich, founded the gallery in 1874. (The name was changed from H. Wunderlich & Company to Kennedy & Company in 1912.) The gallery handled primarily fashionable prints, Old Master prints and a few of the contemporary artists, including James McNeill Whistler (1834-1903). Kennedy & Company was Whistler's first dealer in the United States, and the artist frequently spent time at the gallery. These Whistler exhibition catalogs apparently came from Rudolf Wunderlich's personal collection.