Robison's Manual of radio telegraphy and telephony for the use of naval electricians
A technical handbook on wireless telegraphy and telephony issued by the United States Naval Institute at Annapolis in 1918, written for naval electricians training on shipboard radio equipment. The plates are line-drawn circuit schematics — coils, spark gaps, batteries, vacuum tubes, antennas — printed in black on cream, with lettered labels and directional arrows useful as diagrammatic ornament or pattern stock.
