Commencing in 1951, Douglas Reed spent more than three years working in the New York Central Library, or tapping away at his typewriter in spartan lodgings in New York or Montreal. With workmanlike zeal, the book was rewritten, all 300,000 words of it and the epilogue added only in 1956.
The story of the book itself — the unusual circumstances in which it was written, and how the manuscript, after having remained hidden for more than 20 years, came to light and was at last made for publication — is part of the history of our century, throwing some light on a struggle of which the multitudes know nothing: that conducted relentlessly and unceasing on the battleground for the human mind.
The Controversy Of Zion - Douglas Reed
https://www.controversyofzion.info/Controversybook/reeedcontrov.pdf
https://wikispooks.com/wiki/File:The_Controversy_of_Zion.pdf
https://archive.org/details/DouglasReedTheControversyOfZion