It seems that Galien-Laloue -- Laloue was his actual family name -- was an odd character in several respects. He was something of a loner who focused on his work rather than the socializing that many famous Paris-based artists did. He had three wives, all of them sisters. He used several aliases when signing his paintings, presumably so that he could market them through more than one gallery.
That aside, Laloue's gouache paintings were accurate depictions of Paris architecture as well as his scenes' atmospherics. This makes his works of interest to fans of Paris in the years 1880-1930. Most of the image below seem to have been painted in the early 1900s (he didn't date his works).
A 1920s scene
Probably painted around 1916 -- the man in brown seems to be a British officer who really should be wearing his greatcoat.
This area was destroyed and replaced by that horrible Centre Pompidou.
Both painted from almost the same spot, but in different seasons.