National Society of Operative Printers and Assistants.

• National Society of Operative Printers and Assistants
• National wage agreement
• Natsopa
• NATSOPA and the Keable Press (Daily Worker)
• NATSOPA memorial homes
• NATSOPA memorial homes, Wellsboro' Hill, Market Bosworth, Leicestershire
• Royal Commission on the Press
• Souvenir of the jubilee of the National Society of Operative Printers and Assistants 'Natsopa' 1889-1939
• The present situation
• The Pressmen's Home, Tennessee
• The story of the Natsopa memorial homes at Temple Hall, Wellesborough