Map and letter from US Navy to Donald MacKinnon, Brock, about `Bottle Paper Drifts`, dated 1929.

Map of the Atlantic showing the direction and frequency of ocean currents from data collected from `Bottle Papers` thrown overboard by the US Navy during 1924-1929, and a letter from the Hydrographic Office of the US Navy to Donald MacKinnon, Ruaig, in 1929, thanking him for the returned bottle paper that he found on Tiree.

Object Details

Other Number: not specified
Normal Location: Filing Cabinet 9: drawer 3
Current Location: normal location

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