La BNF (French National Library) uploaded, in its website, gallica.fr, Alphonse Allais' Album primo-avrilesque few months ago. This book collects all "monochromes" of the french writer and member of Salon des Arts Incohérents. (You can see too inside a musical piece without note, longtime before Erwin Schulhoff and John Cage).
You can look or download the book here .
ps : Album primo-avrilesque = Album of first April.