I’ve been trying to track down the title and/or author of a book I remember reading as a tween back in the late 80s/early 90s. My Google search of ‘henry hudson valley psychic twin indian ghost book’ brought me to your page. It’s set in the Hudson River valley, and follows a set of twins @ 12 years old. The boy is the narrator, his sister is psychic. There’s the ghost of a Native American girl, who has some connection to Henry Hudson, and the plot revolves around putting her spirit to rest. Can you help me find it?
Lost Classics of Teen Lit: Name That Book! 