Émile ZOLA (1840-1902). L.A.S., February 15, 1870, [to the director of Librairie Nouvelle?]; 1page small in-8. "Please be good enough to ask composers not to practice fanciful indentations in my copy. It sometimes creates a strange confusion in ensemble pieces. I cut my indents as much as possible. I don't think they are long enough to interfere with the distribution of the copy"...