Ink signatures, “Yours truly, P. B. Du Chaillu, Jan 1874,” and “Yours sincerely, Bret Harte, Norwich, N. Y., Jany/74,” on an off-white 4.75 x 7.5 sheet. In fine condition, with two horizontal folds and some scattered light toning. Accompanied by unsigned carte-de-visites of Chaillu and Harte. RR Auction COA.
