Original: The first English-born editor-in-chief was Thomas Spencer Baynes , who oversaw the production of the famous 9th edition ; dubbed the '' Scholar 's Edition '' , the 9th is often considered to be the most scholarly Britannica ever produced .
Simplified: The first English chief editor was Thomas Spencer Baynes , who led the making of the famous 9th edition , which is also called the '' Scholar 's Edition '' .