According to Wikipedia: "Harrie Irving Hancock (1866?-1922) was an American chemist and writer, mainly remembered as an author of children's literature and juveniles in the late 19th and early 20th centuries, and as having written a fictional depiction of a German invasion of the USA."
According to Wikipedia: "Harrie Irving Hancock (1866?-1922) was an American chemist and writer, mainly remembered as an author of children's literature and juveniles in the late 19th and early 20th centuries, and as having written a fictional depiction of a German invasion of the USA."