Thanks Ken....but that brings up a series of photos. Some of which are unknown registrations/serial numbers...like this
http://www.airport-data.com/aircraft/photo/255873.html
Others that I don't understand why...
http://www.airport-data.com/aircraft/photo/308859.html
And others taken by "unknown"
http://www.airport-data.com/aircraft/photo/283979.html
There used to be a profile "unknown" that came up in the tail number search...