Vol. 1. Brief of arguments against public ownership.- Suppl. no. 4. Public ownership in France, by Paul Leroy-Beaulieu.- Suppl. no. 6. Extracts from the report of the Commission appointed to investigate the postal telegraph, and telephone service of the Commonwealth of Australia.- Suppl. no. 8. Telephone memoranda: a few facts and opinions, foreign and domestic.- Suppl. no. 9. Governmental and private telegraph and telephone utilities: an analysies.- Suppl. no. 9a. Shall the government own the telephones and telegraphs.- Suppl. no. 21. Lewis-Sylvan debate on government ownership of telephones and telegraphs.- Suppl. no. 23. Telephone and telegraph sstatistics of the world, Jan. 1, 1913.- Suppl. no. 23a. Telephone and telephone statistics of the world, Jan. 1, 1914.- -Suppl. no. 25. Why Governments fail in commercial enterprises: the fiscal barrier between plan end execution by A. Lincoln Lavine.- Suppl. no. 27. What is wrong with the telephone by C.S. Goldman.- Suppl. no. 28. The development of the telephone in Europe by Herbert Laws Webb 52