The original writing of Srila Prabhupada's Bhagavad Gita As It Is, is the 1968 manuscripts.

And is the original manuscript unedited straight from Prabhupada, is the 1983 edition of Bhagavad Gita As It Is and NOT the faulty 1972 edition incorrectly edited by the then editor Hayagriva dasa.

The 1972 edition was incorrectly edited by the then editor Hayagriva dasa, he even cut sections out the Prabhupāda's Book "Easy Journey to Other Planets" because he believed no one would understand Prabhupāda's teachings on the subject.

He also edited some other books too including Srimad Bhagavatam that have all been corrected BACK to Prabhupāda's original manuscripts. 

Please Avoid the "original book" nonsense sentimental movement who read only the Hayagriva edited versions like the 1972 Bhagavad Gita As It Is..*