Chemist (1823–1897) who devoted himself chiefly to the chemistry of photography, to which he made a number of important contributions. Original 3.75 x 5.75 photo, affixed to its original 4.75 x 7.75 mount, with “Printed by O’Neil on extra brilliant N.P.A. paper,” printed in the border, signed and inscribed in the lower border in black ink “With good wishes for the Buln I am very truly yours, M. C. Lea.” In fine condition. RR Auction COA.
