Relative Concentrations and Diffusion of COVID-19 across the United States in 2020. - Samuel M. Otterstrom; Leonard Hochberg (Cartogr. Int. J. Geogr. Inf. Geovisualization, 2021)

Imported Toponymy and the FamilySearch Place Name Database: Mapping North American Communities with European Capital Namesakes. - Kyle S. Davis; Samuel M. Otterstrom; Daniel M. Reeves (Cartogr. Int. J. Geogr. Inf. Geovisualization, 2025)