Creator
- Robert Laurie & James Whittle1
- Rocque, John, -17623
- Romani, Clara9
- Rosenberg, Lewis I.17
- Ross, Lieut.1
- Ross, Stephanie L.6
- Rouet, Paul2
- Ruckelshaus, Mary1
- Rukstales, Kenneth S. (compiler)1
- Rumsey, David, 1944-135
- Ruscelli, Girolamo1
- Russell, John, fl. 1733-17951
- Ryan, Kevin1
- Ryker, Harrison1
- SF Redevelopment Agency1
- SFMTA, Municipal Transportation Agency, Livable Streets1
- SFpark and SFMTA1
- Sacramento Area Council of Governments4
- Sacramento County (Calif.) -- Department of Technology2
- Sacramento County GIS46