For Halloween ghost-watching, these Manhattan sites were suggested by Joyce Gold, who teaches New York history.

Led by Joyce Gold, a professor of history at New York University.

"Nothing can replace it," said Joyce Gold, an urban historian who conducts tours of the city and says she has 500 books on New York at home.

Led by Joyce Gold, a history professor and guidebook author.

Led by Joyce Gold.

Down the line stood Joyce Gold, a ticket buyer who conducts walking tours of New York City.

A walking tour led by Joyce Gold, highlighting the changing scene in these ethnic neighborhoods.

Joyce Gold, professor of Manhattan history at New York University, is the leader.

A walking tour led by Joyce Gold, a professor of history at New York University.

Joyce Gold and Lee Gelber, both urban historians, saw the possibilities.