Frank Wisner’s document dates back to June 20, 1950.

Evidence

In less than half an hour I found the precious Frank Wisner document. It was still hard to read the date, but I think it was June 20, 1950. — Nicholson Baker, Baseless- My Search for Secrets in the…, 318

Categorization

• corroborated: 3 independent passages support this claim — Nicholson Baker, Baseless- My Search for Secrets in the…, 318