"strange bedfellows! " lamented the title of a recent letter to museum news, in which a certain harriet sherman excoriated the national gallery of art in washington for its handling of tickets to the much-ballyhooed "van gogh’s van goghs" exhibit. a huge proportion of the 200,000 free tickets were snatched up by homeless opportunists in the dead of winter, who then scalped those tickets at $85 apiece to less hardy