4 pages, 8vo, 210 x 135 mm. (8¼ x 5¼ in.), ruled stationery, three very faint rust marks in margin of pages two and three." /> EINSTEIN, ALBERT. Autograph letter signed (originally "Albert," with "Papa" added over it) to Hans Albert Einstein and Eduard Einstein ("Meine liebe Kinder!"), Leiden, 24 November 1923. <I>4 pages, 8vo, 210 x 135 mm. (8¼ x 5¼ in.), ruled stationery, three very faint rust marks in margin of pages two and three</I>. | Christie's