Twenty-one memos stored at the National Archives are inaccessible to researchers.

Evidence

All twenty-one of these memos, numbered and cross-referenced, still exist, stored at the National Archives’ big building in College Park, Maryland—but they are inaccessible to researchers like me. — Nicholson Baker, Baseless- My Search for Secrets in the…, 20

Categorization

• corroborated: 3 independent passages support this claim — Nicholson Baker, Baseless- My Search for Secrets in the…, 20