Danilov . . . is a preeminent authority on museums. According to Danilov, visits to science-related museums constitute 38 to 45 percent of all visits to museums in the U.S. . . . At the beginning of each section there is an introduction describing the history of that particular type of museum. Museum entries vary from about one-half page to two pages in length. A typical entry provides a history of the museum and description of the collection...