This ferrocement building originally built by Martin Maurer is located in a hamlet with a population of what at the 2010 census?
Big Duck:  It was originally built in 1931 by duck farmer Martin Maurer in nearby Riverhead, and used as a shop to sell ducks and duck eggs. Flanders, New York:  The population was 4,472 at the 2010 census.
i don't know