We have not found any definitive information about a possible 1910 version of Twain’s classic, although we presume (based on the year) that it was a short film. The earliest mention we’ve seen was in William V. Mong’s 1940 obituary in the New York Times, which ran under the headline “William V. Mong; Ex-Actor Made Screen Debut in ‘Connecticut Yankee’ in 1910.” The text stated that Mong entered the movies in 1910 in “The Connecticut Yankee.” Coincidentally, Mong played Merlin in Emmett J. Flynn’s 1921 version of A Connecticut Yankee in King Arthur’s Court.

In any case, we don’t know whether the 1910 film used the just-a-dream ending—or perhaps the film itself was just a dream of a 1940 obituary writer.
—Michael Main

Variants

(1)
  1. The Connecticut Yankee [writer and director unknown] (at movie theaters, USA, 1910).
    2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by unknown persons [possibly using an alias]
    Mark Twain (based on a work by)
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . directed by unknown persons [possibly using an alias]

Previous Works
based on A Yankee in King Arthur’s Court by Mark Twain (1889)