Coggins, Jack. frey50 Flashes and flags; the story of signaling. Written and illustrated by Jack Coggins. - New York, Dodd, Mead [1963] - 88 p. illus. 24 cm. LCCN: 63010192 Subjects--Topical Terms: Signals and signaling--Juvenile literature. Dewey Class. No.: j384.9 Cog 4