Complex sentence: It got retitled to "I Stooged to Conquer", the intended, original title of the book, which was changed by the publisher shortly before it went to press 35 years ago.
Split into simpler sentences: It got retitled to "I Stooged to Conquer". The updated title was the intended, original title of the book, but changed by the publisher shortly before it went to press 35 years ago.