[Eurhetemec]

To be honest, whilst the criticism of this book may be valid, I do tend to wonder why you bought it at all? Assuming you did, rather than being given a review copy.

You don't want to know about San Fransisco's:

History
Geography
Culture
Personalities
Occult world
Crime
Quirks

Or really anything at all about San Fran. You only want to know about Mythos monsters and the like, in an almost context-free way. This seems bizarre to me, when you're buying a city-book. Personally, when I buy a city-book, I want to see how the unique character of that city interacts with the mythology of the game I'm buying it for, but I don't just want to know about particular Mythos stuff in a slight context - Otherwise it necessitates me buying a normal guidebook to the city as well, unless I want to just make it up, which in my experience is a recipe for disaster with well-travelled and well-read players. If I wanted to "just make it up", I'd make up my own city.

As for your whole "Well investigators shouldn't stop crime or be interested in anything but the Mythos!" schtick, I think that's pretty questionable and possibly a unique viewpoint. In most of the Mythos novels, crime and depravity are the signs of the Mythos at work in human society, or at least tend to accompany it.

I'd also question your apparently unresearched by no-less-certain-for-it assertion that San Fran didn't have a homelessness problem in the 1920s. I'd be very surprised if that was true, given the amount of social upheaval, literal earthquakes, and so on, in that region.

I always have sympathy for criticism of city books, because I'm a Londoner, and when Americans, or out-dated non-Londoner Brits try and write about the place, it's often hysterically inaccurate or stereotypical (don't even get me started!). From what you're saying, though, this seems like a well-researched and thorough portrait of San Fran in the 1920s, albeit with rather less actual Mythos action that one might prefer.