Title: 51 Sycamore Lane : or a spy in the neighborhood /
Authors: Sharmat, Marjorie Weinman; Weil, Lisl,; Weil, Lisl,
Publisher: Macmillan,
Year: 1971
Subjects: Children's stories; Mystery and detective stories.
Abstract: Convinced that the new neighbor is a spy, a young boy persuades his two friends to help him investigate.