I'm not sure how it happened, but even though I make a near-daily perusal of the Renegade Writer's Blog, I missed a veritable gem of advice. Judging by the lack of comments, so did everyone else.
Linda Formichelli, co-author of the RW books, suggests using Amazon's search function to track down experts with recently published or soon-to-be published books. They're established experts, which is good for you. They have a book to promote, which is good for them. It's brilliant!