Melissa Block remembers her Uncle Allan. He died this week at the age of 90. Allan Block was a self-taught leather worker and old-time fiddle player who owned a small sandal shop in Greenwich Village during the heyday of the folk music scene in the 1950s and 60s. Folk musicians such as Joan Baez and Bob Dylan were known to stop by. Business would stop, as Allan and other musicians would have a free-wheeling folk music jam. As the late folksinger Dave Van Ronk once told a writer: "God help you, if you wanted to buy a pair of sandals."