Yep, there is a book out there, its called the yellow pages. Call your local sound shop/theatrical supply
house or go to
ESTA.org and look up some local companies in your area. If you are looking to just bring in sound, call a local sound installer, if you are wanting audio, lighting, soft goods, and all that good stuff get a consultant in. I would highly suggest not trying to do this yourself, be involved but make sure you bring in someone that has done this many times before.