I couldn’t find much info. about Jean LAIR (b. 1889). In fact, this painting, ‘Rue du Mellah à Mogador’ / ‘Street in the Mellah in Mogador’ is not dated. I like the artist’s simplistic approach towards painting the people in this painting.
I also found an old photo of this street online:
This painting becomes all the more interesting if you read the meaning of the word mellah.