I do wide format fine art printing in San Francisco (for now). I'm in the process of taking my printing and art reproduction business from being a sideline (to modelmaking for advertising) to a full time career, and moving from San Francisco to Hawaii, but not until my house sells. I'm in San Francisco for a minimum of several more months, and would love to work with your brother in producing some prints.
You can direct him to my website at
http://www.colorwaveimaging.com for my contact info. I've been printing with a 44" Z3100 for over a year now, and have gotten nothing but ecstatic reviews from clients about the quality of prints I'm able to produce. I've printed several complete gallery shows and lots of individual prints. As a LL member, you probably already know about the archival properties of HP prints. I'd be happy to show your brother print samples and offer 20% off of my published rates as a new customer discount. I have a wider selection of paper options than most of my competition and am always trying new ones. I will be adding HP Satin Baryte to my list in a few days.
Thanks,
Ron H.