Annual report of the Board of Regents of the Smithsonian Institution . Dr. Bell at the Laboratory Wharf, Watching the Performances ofthe hd-4 on baddeck The HD-4 Floating at Rest on Baddeck Bay. Smithsonian Report, 1919.—Nutting. Plate 7.

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Keywords: ., bookauthorsmithsonianinstitutio, bookcentury1800, bookdecade1840