Not until he died in 1954.
did matisse paint with only oils
To paint pictures.
In Paris.
Why should he not? She was his assistant.
It was painted in 1911.
long paint brush
Sometimes oil paint sometimes gouache.
Derain was a trusted colleague of Matisse, who also painted a portrait of Matisse. Why should they not?
In 1921.
Think it was 1932
Gouache
For a good site: click link below.