Best Guidebook for Bouldering in the Flatirons?

Looking to check out some boulders in the flatirons. What's your favorite guidebook for flatiron boulders? Thanks.

I don’t think a specific guide book exists, I don’t even think there is a guide that exists for bouldering at all, around the front range.

Most of the boulders are quite close to the trail and mountain project is pretty helpful if you search for the satellite boulders. there are several maps where their locations are laid out also, you could also print those out and take them up. generally there is phone reception up there as well. 

Colorado Bouldering, Front Range by Samet/Benningfield.

Like I said, there are no guide books for bouldering in the Front Range.