This historical publication provides a collection of circular letters produced by the National Planning Board on various topics regarding regional planning efforts. The document begins with the thirteenth circular letter and ends with the second. Below are the titles of the circular letters included in this publication:

• Second Circular Letter: Suggestions to Regional Advisers
• Third Circular Letter: Progress Report: Status and Stimulation of Planning Regions, States and Cities
• Fourth Circular Letter: Large Scale Regional and Rural Land Planning
• Fifth Circular Letter: Federal Assistance for Planning
• Sixth Circular Letter: State Planning Status of Organization and Work
• Seventh Circular Letter: Suggestions to State Planning Consultants
• Eighth Circular Letter: State Planning Legislation
• Ninth Circular Letter: National Planning
• Tenth Circular Letter: Corporation for Planning
• Eleventh Circular Letter: Status of City and Regional Planning in the United States
• Thirteenth Circular Letter: State Planning Progress

This report is part of the collection of scanned historical documents available to the public.