Boy Scouts in an Airship; Or, The Warning from the Sky by G. Harvey Ralphson  || Ralphson, G. Harvey (George Harvey), 1879-1940 || Boy Scouts -- Juvenile fiction; Aeronautics -- Juvenile fiction; South America -- Juvenile fiction; United States. Secret Service -- Juvenile fiction; Paraguay -- Juvenile fiction || Children's Book Series; Browsing: Children & Young Adult Reading; Browsing: Fiction || Language : English