“Volume 'H' in his encyclopaedia of reference” [PRIO]    If you were looking for the Sherlock Holmes media pundit, you've come to the right place. Howard Ostrom is a completist of Sherlock Holmes material in media, and he's been on the hunt for decades.   Howard has collected more than 4,300 names of individuals who have played Sherlock Holmes in various formats over the years, and has written the new book , with Thierry Saint-Joanis, BSI ("Monsieur Bertillon") as editor and illustrator, as an accurate documentation of Sherlock Holmes across all media.   In our conversation, Howard describes the discovery of an error and a determination of the correct identity of the first actor to play Sherlock Holmes on film; he shares his secrets of sourcing new material; he makes an expert suggestion on where new Sherlockians might start their journey; and shares one or two of his biggest surprises.   Toward the end of the episode, you'll find the latest Canonical Couplet. See if you can figure out the story we're referring to, and you might win a prize – you don't need to be a  – every listener is eligible to participate! (But we could still use your support.)        Please do consider becoming a . Your support helps us to ensure we can keep doing what we do, covering file hosting costs, production, and this year, transcription services.     Sponsors You may notice a difference in our sponsorship. Please visit them to support our show:   Would you care to become a sponsor? There's always room for more. You can find .   Links   This episode:   of I Hear of Sherlock Everywhere Many more links, articles and images are available in our Flipboard magazine at  as well as through our accounts on , , and .   Please subscribe on the podcast provider of your choosing: , , , , ,  or  — or perhaps another we haven't listed here — and be kind enough to leave a rating and review for the show. And please tell a friend about us, in any fashion you feel comfortable.   Your thoughts on the show? Leave a comment below, send us an email (comment AT ihearofsherlock DOT com), call us at (774) 221-READ (7323).   Transcript We're still looking for your help to reach . That will allow us to fund transcripts of every episode. But we do need you to pitch in — please consider supporting us via  or  for any amount to make this process sustainable!     --