While I was researching foreign exchange reserves of central banks, I found this page on the ECB’s website. Much to my surprise, the ECB has begun publishing figures on their allocated and unallocated gold reserves since August 2015: https://www.ecb.europa.eu/stats/external/reserves/html/index.en.html
If you read the series of analyses by Dr. Jelle Zijlstra, one of the world’s most informed central bankers of his era (1967-1981), you have read a little over half a “modern book” on the historical backgrounds of the international monetary framework and the reasons for the Bretton Woods framework to collapse. My selection of translations portrays a great similarity to the extent that the essential point is repeated again and again and which is most eloquently described in Zijlstra’s autobiography of 1992: “Gold as the monetary cosmos’ sun”.
Here are my thoughts on why his analysis is highly relevant to today’s financial crisis.