May 5, 2019
Here's the 1830 map again for your convenience, if you'd like to try to locate Jean Valjean's approximate trajectory through the sewers.
And the details of that journey are too much for our Google map (and my mapping skills), but I have marked, in the new Part V layer, the point where Jean Vajean enters the sewer and where he leaves it, as well as la Madeleine, which he (significantly) passes along the way.