Tag: Paul Trevillion Grid View List View Sort by: Viewed Liked Discussed Title Date Published 1:11:16 What Is Geographic Data and Where Can I Find It? Paul Trevillion and Eric Bowman help you find sources of geographic data that meet your mapping and analysis needs. Local and online sources of existing data as well as methods to create new data, will… Added: Sep 2nd, 2011. Recorded: Jul 12th, 2011. 74672 views, 2 comments, 1 likes this. 17:36 What is a GIS Service? Paul Trevillion gives an overview of GIS services, how to create them, and how to use them. Added: Sep 2nd, 2011. Recorded: Jul 13th, 2011. 21682 views.