Elmer Sperry: Electric Searchlight, 1920

January 11 & 12, 1921: The suit brought against Sperry by General Electric was settled, clearing the way for the searchlight case to be reopened for evaluation.

January 19 & 22, 1921: The Franklin Institute questions the originality of Sperry's high intensity searchlight, and Thompson heartily defends.

March 12 & 15, 1921: These letters, the most recent documents in the case file, were sent between Sperry and CSA member C.W. Masland, in what appears to be the final days of the Committee's evaluation of the Sperry searchlight. Sperry describes some of the outstanding features of his machine, and Masland passes the inventor's letter along to the Committee. These two letters indicate that the evaluation was indeed started up again in 1921, but no further information on the case exists.