Online free data

Looking to add some data to your ArcMap project quickly? Online data services are a great option to consider.

As a very local option, you can use the ArcIMS server from Atlantic County which is at http://njgin.aclink.org

For New Jersey there is a fairly rich ArcWMS service on http://njwebmap.state.nj.us/njimagery  This includes the 1930s b/w aerials of NJ and beautiful old topo maps.

For detailed leaf-on imagery across the US you could  add napi.apfo.usda.gov as an ArcGIS web service.

NOAA has multiple ArcIMS services including http://nowcoast.noaa.gov/