This is a talk I gave for a Computer Science Colloquium at Gettysburg College on Dec. 8, 2016.  It is a summary of some of my work in digital representations, many tied to historical data. This is a link to the talk.

The talk is mainly concerned with one type of representation of data, maps.  It discusses how maps can be used to convey information.  The talk first looks at maps which are Graphic Information Systems (GIS), maps that are pictures, linear maps, pictures that are maps, and non geospatial maps.  Each of these is a distinctly different type of map,and it is important to realize the differences and advantages and disadvantages of each to type of map, how to use them individually, and how they can be combined.  This talk is not a paper on how to use maps in applications, but more a chance for students to start thinking about the issues, and a chance to encourage students to work with me on projects associated with digital scholarship.

I would encourage anyone interested in working in this area, either as a history buff like me, or from a more academic perspective, to contact me at This email address is being protected from spambots. You need JavaScript enabled to view it..