These services are avaible to UW students, faculty, staff or anyone with access to the ESRI software ArcGIS Desktop. Aerial photos hosted by the UW libraries can be accessed through ArcGIS Server Image Services. In ArcCatalog under ArcGIS Servers click on "Add ArcGIS Server", choose the "Use GIS services" and enter the following URL into the dialog box:
Service URL: http://wagda.lib.washington.edu:6080/arcgis/rest/services
One you have created a connection, browse to the Imagery Services folder to see a list of image services available.