I read some years ago that Gance's epic once had some 3D sequences. I recall that Gance was quoted, perhaps in Kevin Brownlow's "The Parade's Gone By", as saying how well they worked.
Is this true (or an urban legend) and if so, how likely is it that any of the material has survived?
Is this true (or an urban legend) and if so, how likely is it that any of the material has survived?