United States. Federal Communications Commission. Telephone Investigation

• Report on American Telephone and Telegraph Company corporate and financial history
• Report on American Telephone and Telegraph Company long lines department
• Report on American Telephone and Telegraph Company long lines department estimated depreciation reserve requirements by classes of plant
• Report on American Telephone and Telegraph Company long lines department plant retirement accounting practices pole lines
• Report on American Telephone and Telegraph Company long lines department purchases of property from subsidiary companies
• Report on American Telephone and Telegraph Company long lines department rental of plant
• Report on American Telephone and Telegraph Company long lines department sales of property to subsidiary companies
• Report on American Telephone and Telegraph Company security investments
• Report on associated Bell Telephone Companies
• Report on Bell System
• Report on Electrical Research Products, Inc
• Report on presentations by American Telephone and Telegraph Company of license contract costs