I'm going to make this quick; I'm supposed to be in bed; holiday tomorrow. But I was keen to leave you with something. And this is such a joyous piece of pocket mappery. Barely larger than a mini-Moleskin and, although dateless, I'd guess from around the 50s, this handy guide to the French capital is interestingly interesting. With multi-tabbed sections, beautiful maps and expandotious fold-outs.
Tab section 1 is an index of Rues (or "Rues" as we say in France), while Tab Section 2 is a collection of 20 maps, one for each Arrondissement. Bonus maps include one each for Jardin d'Acclimatation, Parc Zoologique, an overview of the city's regions and a lovely one at the front for the Metropolitain. No Harry Beck admittedly, but then this is the crazy French (no offense, I really do mean that in the most affectionate way), I doubt that they would stand for such conformity.
And to finish the whole poche-size marvel off there's a superb fold-out street map packed into the back. Bloody marvelous (as we say in Italy).