Publisher
- United States. Army Map Service.683
- Cartography Associates134
- Purdue University Libraries90
- Stanford Digital Repository81
- Stanford University. Center for Spatial and Textual Analysis73
- Sanborn Map Company55
- Virtual Shanghai Project36
- United States. Department of State.31
- Humboldt County Building & Planning Department5
- Anderson Publishing Co.3
- United States. Central Intelligence Agency.3
- A.T. Andreas1
- Advocate-Republican1
- Harrison & Warner1
- Iowa Publishing Co.1
- Land Info (Firm)1
- Merchants' Messenger1
- Successful Farming Publishing Co.1
- UC Berkeley Library1