This is a photograph of artists in Paris (c.1890s?) from Vineland Historical & Antiquarian Society.  It may depict artists known to Richard Landis, son of Charles Landis who founded Vineland, New Jersey.  Help identifying the artists would be welcome.

The man at the left looks somewhat like Henri Matisse.  Could it be Paul Serusier at the far right?  Or how about the Nabis and friends?  Here's a photo of Ker-Xavier Roussel, Edouard Vuillard, Romain Coolus, and Felix Vallotton:

https://en.wikipedia.org/wiki/%C3%89douard_Vuillard#/media/File:Ker-Xavier_Roussel,_%C3%89douard_Vuillard,_Romain_Coolus,_Felix_Vallotton_1899.jpg

John Sloan's studio with Everett Shinn & others

This photo shows the interior of John Sloan's studio in Philadelphia in 1898.  I think John Sloan is the man wearing a light coat at the far left of the front row, and I think Everett Shinn is on the floor to the right of center with another man on his lap.  I'd love to get confirmed identification of these and other artists in the photo, however.

Photograph courtesy Smithsonian Institution Inventory.

You can see an 1896 photograph of Everett Shinn, Robert Henri, and John Sloan here:

https://en.wikipedia.org/wiki/Everett_Shinn#/media/File:Shinn_Henri_Sloan.jpg