The Mapping of Ukraine: European Cartography and Maps of Early Modern Ukraine, 1550-1799, which opened yesterday at the Ukrainian Museum in New York, “includes 42 original maps published by European mapmakers over a 250-year period. A majority of the maps in the exhibition are from the Museum’s Marie Halun Bloch Collection, which consists of 52 maps bequeathed to the Museum by the Ukrainian American writer of children’s books upon her death in 1998.” Until October 5.