The Motion Picture Chums at Seaside Park is a book by Victor Appleton. The book is part of the "Moving Picture Boys" series and follows the adventures of the main characters, who are interested in the film industry. In this particular story, the characters visit Seaside Park and encounter exciting challenges and obstacles, which they must overcome through teamwork and friendship. The book provides an exciting and adventurous tale that is sure to captivate readers, while also promoting the importance of friendship and perseverance.