I can seem to reproject the MassGIS data into another projection using the “View/Properties” menu choice. Why not?
Basic ArcView cannot reproject data that is already projected. MassGIS data that is distributed in Librarian format is projected in Mass State Plane NAD83 meters, so it cannot be reprojected in basic ArcView. If you have ArcView 3.1.1+, however, there is a free extension called the Projection Utility Wizard which was shipped with your ArcView software. This extension can project data from just about any projection to any other projection.
