Final answer:
Stanley Milgram did not specify items impacting mental maps of cities, but related research suggests environmental landmarks and social environments play roles in shaping such cognitive representations.
Step-by-step explanation:
Stanley Milgram did not list specific items that impact how people draw their mental maps of a city. Rather, Milgram is known for his research in social psychology, particularly the famous obedience experiments. However, when it comes to mental maps and geographic spaces, the adjacent texts mention factors influenced by environmental cues, media symbolisms, social environments, and demographic conditions. For instance, Laura Carlson's research suggests that notable landmarks and distinct features help individuals build cognitive maps for navigation. Meinig's Three Landscapes and Social Disorganization Theory indicate that our perceptions of spaces are often shaped by broader social and cultural experiences. It is the influence of these environmental and social factors, rather than specific items listed by Milgram, that affect the way people mentally represent cities.