Aren’t maps great? Now, thanks to the addition of the David Rumsey Map Center, which opened in April in the Bing Wing of Green Library, scholars and map enthusiasts have a new repository of research materials. The Rumsey Collection includes some 150,000 maps and digital images that range from whimsical interpretive drawings to exquisitely detailed antiquarian maps of cities, countries and regions. The three shown here (clockwise from above) are “The Land of Make Believe,” by Jaro Hess, 1930; “Map of California Roads for Cyclers,” by George Blum, 1896; and a map of Italy by Vsevolod Petrovic Nicouline, 1938. All maps from the David Rumsey Map Collection.