324. HARRIETT LANE JOHNSTON (1830 - 1903) Niece of perpetual bachelor James Buchanan, acted as First Lady of the United States from 1857 to 1861. Scarce A.L.S. 2pp. on a folded, black-bordered sm. 8vo., note card bearing a coat of arms with the Latin phrase "Semper Paratus Ad Arma" (Always Prepared to Arms), [Washington, 1889], addressed to Miss Fairchild, likely the wife of Treasury Secretary Charles Stebbins Fairchild. In full: "Will you give me the pleasure of your company at luncheon on Thursday January the thirty first at half past one o'clock...". Accompanied by the original hand-delivered transmittal envelope addressed in Lane Johnston's hand. Areas of light toning, else very good $200 - 400