• Bunyan Characters (1st Series)
• Bunyan Characters (2nd Series)
• Bunyan Characters (3rd Series)
• Jacob Behmen: An Appreciation
• Samuel Rutherford and Some of His Correspondents
• Santa Teresa: An Appreciation: With Some of the Best Passages of the Saint's Writings
• Sir Thomas Browne and his 'Religio Medici': An Appreciation