British physicist and writer (1851-1940) who held patents for key radio technologies and identified electromagnetic radiation independent of Hertz's proof. ALS, one page both sides, 7 x 8.75, Mariemont, Edgbaston letterhead, January 27, 1903. Letter to "Mr. Walker," in part: "I cordially thank you for the money but I regard one condition you have imposed upon me: viz the desire for anonymity. Can this be relieved? I should like the students to know to whom they are indebted." In fine condition, with some light creases to the lower right and light staining the the reverse.
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