See, Tom's comments are why I never use the word 'widescreen', it's misleading and doesn't get the point across.
Tom, the term we use here is OAR which stands for Original Aspect Ratio, and it is THIS that we care about here in the forum, NOT widescreen. 'OAR' covers every ratio that exsists, the term 'widescreen' covers only films that are wider than 1.33:1.
We support OAR here, so the films you mentioned are loved with open arms by people here because they are presented in their original 1.37:1 forms. We wouldn't have them any other way.
The Robe started mainsteam anamorphic widescreen presentation, but NOT widescreen, period.
In 1952, Cinerama debuted with This Is Cinerama. Even earlier, a lost film called To Make A Fire was made with the same anamorphic lens for The Robe in 1924.
Abel Gance's masterpiece, Napoleon (or to buffs, Napoleon vu par Abel Gance) used a 3-camera setup to create a massive 3.99:1 panorama for the finale (and a few others now only in 1-strip)
Even EARLIER was Biograph's 70mm productions.
And a few 65mm films were made in 1929 and 1930, with most lost or restored.