Jongkind, Johan BartholdAutograph letter signed, three pages (on two sheets addressed and postmarked on the reverse of the second sheet) housed in an elegant dark blue hardcover with the name of the painter in gold colored letters on the spine of the cover and the title (in French) on the front, 5,25 x 8 inch, Rotterdam, 24. 10. 1858, in French, confidential letter to his merchant Martin* Jongkind writes about his existence and the importance of his emotional state for his