Hertfordshire (England). County Council.

• (County development plan, 1951.)
• Agreed syllabus of religious instruction
• Grounds for conservation
• Hertfordshire
• Hertfordshire agreed syllabus of religious education
• Hertfordshire County Council, 1889-1939
• Hertfordshire county structure plan
• Hertfordshire industrial guide
• Hertfordshire minerals local plan
• Hitchin, Letchworth, Baldock transportation study
• People and traffic
• People and traffic: a study of conflict and congestion in Hoddesdon