Possible Clues:

• Bagnold and Blyton
• Writers Bagnold and Blyton
• Authors Blyton and Bagnold
• Writers Blyton and Bagnold
• Author Blyton et al.
• Markey and Bagnold
• Authors Bagnold and Blyton
• Old-time actresses Markey and Bennett
• Author Bagnold and others
• English children's author Blyton and others