From tugs to tankers, and kayaks to container ships, there's much to see and learn about the vessels that travel from the Golden Gate Bridge through San Francisco Bay. San Francisco Boats on the Bay: A Voyage in Riddles is filled with fascinating stories, facts, and questions about twenty-four boats and ships seen in these waters. Through challenging riddles and photos, readers are given clues to help them identify each vessel. Add to this the vocabulary of mariners, mooring locations and boat-related creative activities, and it's full steam ahead into a colorful world of nautical wonders. Written for children, ages 5 to 12, San Francisco Boats on the Bay will spark the curiosity, imagination and critical thinking of children of all ages.

The At Issue series includes a wide range of opinion on a single controversial subject. Each volume includes primary and secondary sources from a variety of perspectives -- eyewitnesses, scientific journals, government officials and many others. Extensive bibliographies and annotated lists of relevant organizations to contact offer a gateway to future research.

The Sandman: His Sea Stories includes 21 stories about life at sea. These stories were written by William J. Hopkins, who read them to his own children to help them fall asleep.

Learn all about spacecraft, from the first space capsules to space planes and space shuttles. Have you ever wondered where the crew all sit inside a tank, or what a jet engine looks like behind the turbine blades? Well these six books will help you find out just that! Find out something amazing about each vehicle and then turn the page to see it sliced in two where its innermost secrets will be revealed. Simple text and large labels and captions will make the bite-sized pieces of information appeal to a wide range of reading abilities, and the artwork is both friendly and accessible. What's Inside - perfect for inquisitive, machine-mad readers who love the details of how vehicles work. Suitable for readers aged 8+.