All are hardcover books. Two have dust jackets and one has color covers. Several appear to be FIRST EDITIONS. The copyright dates in each is the only one listed. Dale of The Mounted. #1 in the series. c. 1951. With Dust Jacket. Dale of The Mounted. #1 in the series. c. 1958 Dale of The Mounted in The Northwest. #2 in the series. c. 1958 Dale of The Mounted in The Arctic. #3 in the series. c. 1953. Color covers Dale of The Mounted Dew Line Duty. c. 1957. Dale of The Mounted Pursuit on The St. Lawrence. #10 in the series. c. 1960. With Dust Jacket. Dale of The Mounted Atlantic Assignment. c. 1956