Thanks Dan; For the input. What I have are a series of shapefiles downloaded from a State Agency site. They have all the associated files, including shp, dbf, prj, shx, cpg. I don't know if they are shp files from Map or Pro from the State.
I was hoping that Pro could just bring them in with Add Data. But it sounds like they must be established as an ArcMap Project mxd and exported as a map package? And Add Data can't see ArcMap shp files? Or is something else going on here?
Thanks; Dave