Autograph letter signed.

4to. 1 p. Apologizing to his friend and protégé Maurice Morel, known as l'Abbé Morel, for having forgotten an appointment. In a desperate and almost certainly exaggerated apology, Jacob laments his "appalling and tormented existence", his poor health and his "inescapable financial embarrassments" that "absorb" him: "Je ne sais comment m'excuser de n'avoir pas songé à notre rendez-vous. Je vis une existence atroce et tourmenté non seulement par mes malades [!] mais parl'inéluctables embarras financiers qui m'absorbent et nécessitent des courses fatals; il ne s'agit de rien moins que de la rupture de mon contrat et qui est mon unique moyen de vivre". - The "breach of his contract" and only means of livelihood that Jacob mentions in the end of the letter probably refers to his long litigation with an insurance company following a car accident in 1929. In 1932, Jacob finally was adjudged a small life annuity. - The devout catholic Jacob met the future priest Maurice Morel (1908-91) when he was taken in by father Albert Fleureau in Saint-Benoît-sur-Loire for detoxification in 1921. Jacob dedicated is 1921 poem "Le Laboratoire central" to Morel and encouraged him to follow his second calling as a painter. In his art, Morel was decidedly modern and abstract. He opened the catholic church of France to non-figurative art, even facilitating the introduction of modern art to the Vatican Museums. - Traces of folds.