Alessandro Fabbri (1877–1922) was both the builder and the commanding officer of the Otter Cliffs Radio Station, a United States Navy facility that was important during World War I.

Before the US entered the war, the New York Times reported that Alessandro and his brother Ernesto Giuseppi Fabbri Jr. were under investigation by the US government, suspected of using radio equipment to assist German spies.

[1] Upon publication of a vigorous response from Ernesto, the Times clarified that the government had been investigating radio operators in general, not targeting the Fabbris specifically.

A resident and lover of Mount Desert Island who commanded the United States naval radio station upon this site from its establishment on August 28, 1917 until December 12, 1919.

This tablet is erected by his friends and fellow townsmen in testimony to his patriotic service, high character and endearing qualities.