Which two American brands dominate the discussion regarding sheer ubiquity in North American offices and homes from the 1930s through the 1960s?

Answer

Smith Corona and Royal

Smith Corona and Royal frequently claim the top spots based on frequency of encounter, suggesting massive production runs and household name status in North America during the typewriter's peak decades.

Which two American brands dominate the discussion regarding sheer ubiquity in North American offices and homes from the 1930s through the 1960s?

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