“The Philadelphia History Museum, [known until 2010 as the Atwater Kent and] mandated by the City Charter as Philadelphia’s official attic for things made and owned here — whether President George Washington’s desk or Mike Schmidt’s batting helmet — will close to the public Monday for an undetermined period of time, museum officials said Tuesday evening. The closing comes as Temple University has withdrawn from talks about a possible partnership with the museum, surprising city officials who had expressed optimism about such an alliance as recently as April.”