Historical Aerial Photography Source

[TBat55]

Thanks for the link!

Terrafly is a good aerial photo site:

http://www.terrafly.com/

Terraserver is also good (this actual link is to a roundhouse)

http://www.terraserver.microsoft.com/image.aspx?T=1&S=11&Z=18&X=794&Y=11897&W=1&qs=%7cmanchester%7cny%7c

[ericboone]

I found this link for the USDA Aerial Photography Office. They sell aerial photographs of large portions of the US from as early as 1955.
http://www.apfo.usda.gov/Ordering%20Products.htm