During World War I, the United Staes Navy asked that private citizens donate their binoculars for use by the U.S. Navy. Martin's Grandparents donated their binoculars and received the letter above from then Assistant Secretary of the Navy Franklin D. Roosevelt.
Franklin D. Roosevelt served as Assistant Secretary of the Navy from 1913 until 1920, and helped to implement Navy policies during World War I. He's seen above reviewing US Navy personnel in Washington D.C.
George and Margaret Crerar with "Peg" in 1917
George and Margaret Crerar with the Millers in Cleveland