Signed letter in French, dated Paris le 7bre 1905 by the French Socialist leader, editor of the newspaper L’Humanité (1904-1914) regretting for not being able to attend to 1905 Art Congress in Venice as he is very busy with “…une tournée électorale dans ma circonscription que je dois faire…”. He closes letting us know the theme and purpose of his invitation for that year Congress: “…vous traiterez certainement mieux que moi le beau sujét “l’ésprit social dans l’Art” que vous me proposiez…” . Jaurès mentions the 1906 elections in the little municipality of Valdériès in Le Tarn department, where he was running for the legislative elections against the conservative marquis de Solages. 3 pp. with letterhead “L’Humanité”. In fine condition.