This is one of the best Victoriana 1st Ed products. At 128 pages it is a very comprehensive guide to London in 1867.
Granted there is the Victoriana-universe spin on everything, but otherwise it is perfect for use with ANY Victorian era game. It especially works well with the 2nd Edition of the Victoriana game. The book is sans-game stats, so there is no system conversion to worry about, just thematic conversions.
The maps are fantastic and I especially enjoyed the descriptions of all the neighborhoods.
Very good resource indeed.