1997 will be a sad year for lovers of the Mutter Museum calendar, produced since 1993 by the fascinating medical museum in Philadelphia. The award-winning calendar highlighted objects from the museum's collection, including the skeleton of twins fused at the head and a wax model of a patient with syphilitic leukoplakia of the tongue (above). The calendar sold thousands of copies and won fans as diverse as the Las Vegas magician Teller (of Penn & Teller) and Harvard University professor of biology Stephen Jay Gould, who calls them "works of art." The calendars earned as much as $15,000 annually for the...

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