1. Map to illustrate the route of David Roberts, Esq: R.A. in the Holy Land, Petrea & Syria (Raster Image) Datasets Stanford University Public content 1855. Stanford Geospatial Center. This layer is a georeferenced raster image of an historic regional map of Egypt, titled 'Map to illustrate the route of David Roberts, Esq: R.A. in... Stanford Digital Repository.