United States. World's Columbian Commission. Board of Reference and Control

• Answer of the Board of Reference and Control of the World's Columbian Commission
• Answer of the Board of Reference and Control of the World's Columbian Commission to the communication from the sub-committee of the Committee on Appropriations of the House of Representatives, 52d Congress, Chicago, March 30, 1892
• Appendix to report of Board of Reference and Control submitted to the World's Columbian Commission at its fifth session, September second, 1891
• Appendix to report of Board of Reference and Control submitted to the World's Columbian Commission at its fourth session, April first, 1891
• Appendix to report of Board of Reference and Control submitted to the World's Columbian Commission at its sixth session, April sixth, 1892