Search Rhode Island Radio
Nikola Tesla did have a Rhode Island connection other than his article in the book by Massie and Underhill. Throughout 1909 and 1910 the inventor shuffled back and forth between Providence, Bridgeport, and New York City, where he had installed various renditions of his turbines. This ia noted in November 23, 1909 corrospondence between Tesla and George Scherff his personal scretary. Then in corrospondence between Tesla and the Westinghouse company it is stated the company where Tesla was working with in Providence was the Corliss Company. The Galena below makes the connection to Corliss.1
On the subject of Tesla's Galena, this is a converstaion between Fred Jaggi and Bob Mirriam, 2012, trancribed by Craig H. Moody.
Here is an article from the Antique Wireless Association's, "Old Timers Bulletin", Volume 6, No. 4, explaining how Ed Cummings found the Galena and how he attributes it to Tesla.
Wireless Telegraphy and Telephony
Massie and Underhill