Nope, just the UI cards. There are 3 types for each level of a building: the one you see in the panel (#culture-name_level-name, 78x62), the one you see in the building browser (#culture-name_level-name, 64x51) and the large one you see when you right-click to get info about a building (#culture-name_level-name_constructed.tga, 361x163). The first and the third go into data/ui/culture-name/buildings/ folder and the second into the construction/ subfolder of the former.