painting sunday afternoon on the island of la grande jatte
Georges Seurat, Study for “A Sunday Afternoon on the Island of La Grande Jatte,” 1884 (Photo: Wikimedia Commons Public Domain)
While the styles explored by Post-Impressionist artists are diverse, most featured flatness, formality, and exaggerated color in their work—characteristics that are evident in A Sunday Afternoon on the Island of La Grande Jatte.
Seurat painted A Sunday Afternoon between May 1884 and March 1885, and from October 1885 to May 1886,  focusing meticulously on the landscape of the park. He reworked the original and completed numerous preliminary drawings and oil sketches. He sat in the park, creating numerous sketches of the various figures in order to perfect their form. He concentrated on issues of colour, light, and form. The painting is approximately 2 by 3 meters (7 by 10 feet) in size.
The May 1976 issue of Playboy magazine featured Nancy Cameron—Playmate of the Month in January 1974—on its cover, superimposed on the painting in similar style. The often hidden bunny logo was disguised as one of the millions of dots. 
The Art Institute of Chicago, A Century of Progress Exhibition of Paintings and Sculpture, June 1–November 1, 1934, cat. 324.
Minneapolis Institute of Arts, Exhibition of Modern French Paintings from the Birch-Bartlett Collection, April–September, 1925, checklist no. 9.
Just like a lot of Neo-Impressionist works back then, A Sunday Afternoon On The Island Of La Grande Jatte was met with a lot of harsh criticism from the traditional, more Salon-oriented audiences. Many reputable contemporary art critics found Seurat’s figures to be less a nod to earlier art styles than a commentary on the modern Parisian society. They also had a problem with the rigid state of the portrayed people and many criticized it for being too mathematical.
At first glance, the viewer sees many different people relaxing in a park by the river and nothing appears out of the ordinary. On the right, a fashionable couple is on a stroll. On the left, another well-dressed woman extends her fishing pole over the water. There is a small man with a black hat looking at the river, a white dog with a brown head, a man playing a horn, two soldiers standing at attention, a couple admiring their infant child, etc.
Despite the island of La Grande Jatte looking a great deal different to how it once did, Seurat’s effort is perhaps the most similar to how it looks today. The banks of the river Seine are considerably steeper than in Seurat’s day but one spot is convincingly similar to his Grande Jatte.
Grammaire was a version of such treatises in terms that were easier for artists to understand and upon reading it, it was said to have had a notable influence on Seurat and his work on Grand Jatte. Blanc’s work was said to make reference to styles and techniques, which could have and eventually did have a direct application for Grande Jatte.