Online investigative journalism site ProPublica is the latest publication to produce an expanded line of ebooks, now in a “digital publishing partnership” with Open Road. (The journalism organization issued four titles as Kindle Singles last spring.) The new line of ebooks, priced at $5 or less and available as of the end of February, will be based on previously published material in expanded form, including “Presidential Pardons” (a series that ran in the Washington Post) and “Post-Mortems,” an investigation of coroner and medical examiner offices ProPublica did in conjunction with NPR and Frontline. Each ebook will also include additional material […]