Category Nuances for personal_letters:

• simple,
• original,
• historical,
• private,
• everyday,
• informal,
• personal,
• related,
• confidential,
• written,
• imaginative,
• unpublished,
• actual,
• unofficial,
• short,
• intimate,
• formal,
• connected,
• public,
• archival,
• unique,
• literary,
• cultural,

Simple Categories for personal_letters:

• writing,
• text,
• information,
• nature,
• document,
• matter,
• object,
• item,
• message,
• papers,
• artifact,