Fun with Google Earth

Want to have some fun using Google Earth to see what structures or roads have changed over the past 50 to 80 years?  You can download historical aerial imagery from the USGS website and overlay it in Google Earth, get it aligned, and then use the transparency slider to go back and forth between old and new.

I will post 3 preset overlays which you can use to try it out.  Download the KMZ files and open them with Google Earth.  If you do not have Google Earth you can download it here:
Google Earth

Once you have Google Earth you should be able to double-click the KMZ file and it will open right up. Once it is opened you will see it as a "Temporary Place", right-click on that particular temporary place and select properties.  It will bring up a dialog box which has a transparency slider and you can slide back-and-forth between old and new.

Temporary Places is underlined in red. The dialog box opens (shown on right) and you will get the transparency slider, circled in red.

1938 Overlay
1946 Overlay
1953 Overlay
                               
 If you would like to look at more historical imagery check out the Utah Geological Survey.

.