PyCon Colombia 2019.  Geospatial Infrastructures for Collaboration. February 2019, Bogota, Colombia.  

GeoNode Summit.  Paolo Corti, Ben Lewis.  March 2018, Torino, Italy.

Ben Lewis. WorldMap: Infrastructure for Old Maps Collaboration. 2018 International Workshop: A Portal for Japanese Old Maps. Ritsumeikan University, Kyoto.

Paolo Corti, Ben Lewis, Ariel Nunez. Maintaining Spatial Data Infrastructures (SDIs) using distributed task queues. August, 2017.  FOSS4G 2017

Paolo Corti, Ben Lewis, Devika Kakkar, Building SDIs and geoportals with GeoNode and a search engine. FOSS4G 2017

Paolo Corti, Ben Lewis. Making Temporal Search Central in a Spatial Data Infrastructure August, 2017. 2017 International Symposium on Spatiotemporal Computing.

Implementing an open source spatio-temporal search platform for Spatial Data Infrastructures. OGRS. Paolo Corti, Benjamin Lewis, Tom Kralidis, Ntabathia Jude Mwenda. Perugia, Italy. 2016.

HHypermap: A Platform for Building and Maintaining a Global Geoservices Registry. Benjamin Lewis, Paolo Corti. CyberGIS’16. Urbana, Illinois, 2016.

Building an Open Source, Real-Time Updated, Billion Object Spatio-Temporal Search Platform. International Workshop on Cloud Computing and Big Data (IWCCBD). Paolo Corti, Ben Lewis. Fairfax, VA, 2016.

Benjamin Lewis. HHypermap: A Platform to Enable Geospatial Search. FOSS4G Conference, Raleigh, North Carolina. 2016. 

Benjamin Lewis. Intro to Global Spatio-Temporal Search: NEH Funded Enhancements to WorldMap, Live Demo of WorldMap 2.0 with a User Survey. 2016. Harvard Center for Geographic Analysis, Conference on Space, Place, and Geographic Thinking in the Humanities. Benjamin Lewis. April, 2016.