Publisher
- Sanborn Map & Publishing Co.162
- National Geospatial-Intelligence Agency160
- Iowa Publishing Co.143
- United States. Department of Agriculture134
- Webb Publishing Company133
- Anderson Publishing Co.127
- Главное Управление Геодезии и Картографии при СНК СССР125
- Ohio. Division of Water122
- United States. Commodity Stabilization Service116
- published by W.W. Hixson & Company115
- New York (City). Department of City Planning112
- Iowa. State Planning Board108
- Hennepin Atlas and Publishing97
- United States. Department of Agriculture. Production and Marketing Administration97
- University of Iowa96
- Geo. A. Ogle & Co.91
- Purdue University Libraries89
- 87
- North West Publishing Co.86
- The Company85