Simple categories matching unofficial:

• record,
• document,
• writing,
• information,
• material,
• traveler,
• account,
• history,
• writer,
• observer,

Members with property unofficial:

• letters,
• memo,
• surgery_log,
• journalist,
• turkish_book,
• personal_letters,
• budget,
• memoir,
• note,
• journal,
• diary,
• oral_testimony,
• transcript,
• article,
• registration,
• speech,
• trader,
• personal_experience,
• border_certificate,
• clipping,
• autobiography,
• letter,
• agenda,
• history,
• key_text,
• academic_analyst,
• notice,
• knowledge,
• anecdotal_note,
• missionary,
• retired_jurist,
• personal_papers,
• test_scores,