Biography from Wikipedia via TMDB
Leading role · Director: Robert De Lacey
Sources: YouTube (opens in a new tab)
Youtube HD Streaming apparently from Library of Congress but not officially. This is a significant improvement over previous public domain sources though, so it's enough reason to believe it's a newer scan
Small role · Director: John Ford
Sources: Criterion Forum (opens in a new tab)
Lobster Films Blu-ray is a newer master but with terrible encoding and brightness levels. May still be better
Small role · Director: David Butler
4K restoration from original technicolor negatives
Small role · Director: Fred Niblo
While it is included in Warner Bros 50th Anniversary Blu-ray it's still the same DVD version
Warner Bros 4K Blu-ray doesn't include this as an extra any more
Small role · Director: John Ford
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