National Geographic Society (U.S.), McCandless, B., Grosvenor, G. H., McCandless, B., & Grosvenor, G. H. (1917). Our flag number: With 1197 flags in full colors and 300 additional illustrations in black and white. Washington: National Geographic Society.
Chicago Style CitationNational Geographic Society (U.S.), Byron McCandless, Gilbert Hovey Grosvenor, Byron McCandless, and Gilbert Hovey Grosvenor. Our Flag Number: With 1197 Flags in Full Colors and 300 Additional Illustrations in Black and White. Washington: National Geographic Society, 1917.
MLA CitationNational Geographic Society (U.S.), et al. Our Flag Number: With 1197 Flags in Full Colors and 300 Additional Illustrations in Black and White. Washington: National Geographic Society, 1917.