IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Radar, twin .50 caliber guns in a ...

Text printed on the recto side of the leaves. Probable date range of issue based on dates of production for the PBY-3. Contents 1. Foreword -- 2. General description -- 3. Power plant description -- 4 ...

The United States created many famous and formidable warplanes in the second world war. These included the B-17 Flying ...