On my first reading, your quotation from Lefebvre, White, ‘Movement is a productive process’ stood out as something that highlights what you, I, and I think Alexander are trying to visualise. We all already have the travel routes of people or information across borders (John Aruther, geographical knowledge/maps, and the Gundi tobacco), and we are aware that there is something significant about the process of movement and what happens both to the object/person, and perhaps also the environment in your case (although I am wondering whether your focus is on John Arthur as affected by movement or the space he travels in affected by him?). A first tool for looking at this, as you pointed out, is actually visualiing (rather than textually describing) their movements. I wonder then what it is possible to do with these images – will they create insights that we previously have not been able to access, or they are purely didactic? (In some ways this links to a question I alluded to regarding identification of networks – what can identification of networks tell us beyond their existence?).. You alluded to this I think in your comment ‘showing the inherent mobility of missionaries’.