Yours 4 ever, W. Mitchell," older brother of L. J. Mitchel

2 scans - 1of2 = whole card, 2of2 = image alone

Mémoires de l'Académie des sciences, des lettres et des arts d'Amiens

Vol.1-10, 1835-57, are unnumbered; v.11-20, 1858-73, are numbered "2. sér. t.1-10"; v.21-30, 1874-84, "3. sér. t.1-10"; v.31-32, 1884-85, "4. sér. t.1-2." Beginning with v.33, the numbering by series is discontinued

Journal de l'École polytechnique.

Cahiers 7-10 were originally intended to comprise "Mécanique philosophique, par R. Prony" in 5 parts, but only the first 3 parts were published, forming cah. 7-8. Later, Prony's work was withdrawn from the series and in its place "Leçons de mathématiques données à l'École normale en 1795" by Legrange and Laplace were published as cah. 7-8.