There's an organisation for everything, even book designers. ABDA showcases the work of a group of designers with diverse approaches and workflows. It even organises awards, a few events and posts interviews with individual designers. Here's my interview from their archives.
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design + layout + print solutions + ebooks
Tips for authors, promotional ideas, design resources and more.
Information and tips, focusing on publishing, publicity, promotional ideas, author profiles, design resources and more.