Useful external resources for researching Śrīla Prabhupāda’s books, original editions, editorial changes, letters, lectures, conversations, scans, and publication history.
External sites have their own editorial positions. Inclusion here is for research and reference and does not imply agreement with every claim they publish.
Search Śrīla Prabhupāda’s Teachings
Prabhupada.io
A searchable digital archive of original books, recordings, letters, and related indexes. Particularly useful when tracing phrases or comparing how Śrīla Prabhupāda used a term across different sources.
PrabhupadaBooks.com
Searchable access to original books together with lectures, conversations, letters, articles, and historical Back to Godhead material.
Vanisource
An extensive source archive for transcripts, audio, letters, scans, categories, and chronological research. Especially useful when checking letters or locating spoken statements by date and subject.
Original Editions, Scans & Downloads
Vedabase Original — Downloads
Original-edition books in PDF, EPUB, and MOBI formats, including the 1972 Bhagavad-gītā As It Is and other works. The site states that the files are verified against original printed editions.
Krishna.org — Original PDF Scans
Free scans and PDF downloads of original editions, including Bhagavad-gītā As It Is, Śrīmad-Bhāgavatam, Śrī Caitanya-caritāmṛta, and smaller books.
Prabhupada Archive
A preservation project with bibliographical information and scans of first printings. Useful for identifying which editions appeared during Śrīla Prabhupāda’s lifetime and for checking publication history.
Book-Change Research & Comparisons
BookChanges.com
A long-running archive devoted specifically to post-publication changes in Śrīla Prabhupāda’s books, with comparisons, historical material, arguments, and documents.
GitaDiff
A dedicated comparison tool for the 1972 and 1983 editions of Bhagavad-gītā As It Is, including side-by-side differences, filters, patterns, and verse-level research.
Krishna.org — Book Changes Archive
A large collection of articles and documents concerning ISKCON and BBT book changes, alongside the site’s original-edition preservation work.
The Case for the Revisions
BBTEdit.com — See the Changes
The BBT’s own resource presenting and defending editorial revisions. It includes primary editorial material such as scans of Jayadvaita Swami’s annotated first-edition Bhagavad-gītā. It is important for researching the revisers’ stated reasoning and evidence directly rather than relying only on critics’ descriptions of their position.



