OK, kind people. One more question before I put this all to bed for the evening. I am working on the NGS Home Study Course and am using AniMap from Gold Bug Software to produce county maps for several states at different time points for the migraton study required in Lesson 11 of the course. I am at a loss as to what citation format to use. As an example, I am using the software to produce a map of counties in South Carolina in 1800. I am exporting that map to a gif file which I am then opening in Photoshop to edit, removing text I do not want and shading the county of interest. While the original map is produced by the software, the final has been edited by me. How do I cite this map? BTW, I have written the author of the software and obtained his permission to use the maps. Any assistance would be appreciated. Peace, Part of the Tree, Greg