TART WAS the word for Corinna Marsh, tart and outspoken. Conservatives she regarded, en principe, as beyond the pale: war mongering, self-interested, pitiless capitalists to a man. Within her beat a strong old-time compassionate socialist heart. But in the shabby two-room apartment in a rundown Manhattan hotel in which she lived in near penury for more than forty years, one was apt to meet a conservative or two, each of whose misguided political views she would excuse because her ...