“Gold Warriors” (2003), an interesting book by Sterling and Peggy Seagrave. Big on details and names. One can get lost following the cast of characters.

Allegedly, the Japanese buried the plundered Gold in the Philippines.
As the war came to a close, US Intelligence discovered the looted treasure. President Truman and members of the Intelligence Community kept this secret. They used these unaccountable funds to fight the Cold War, interfere in foreign elections and deploy covert operations all over the World. Any Nazis Gold had the same treatment and was run through Swiss accounts.

It appears to be well documented. No one really knows how much there was or whether it has been exhausted. At the time it was discovered, it was felt that if the hoard was revealed it could collapse the price of Gold ($35usd) that was held in Central Bank reserves. Possibly like the effect the Inca Gold had coming back to Spain centuries ago.

The CIA was funded for 50 years by this off-book asset.