Vintage Aerial is a huge, searchable database of old aerial photographs. In the project’s own words:
Our collection of over 25 million photographs spans the second half of the 20th century, documenting a time in American history when life revolved around rural communities and small farms. Our common American heritage happened in that time, in those rural communities. We want to share the period preserved in these photos, and the memories they represent, with the generations who came too late to experience it firsthand.
I had so much fun clicking around in their archives, looking at what my property looked like fifty years ago. This could also be an invaluable tool for anyone doing community research or for farmers wondering what their land had been used for in the past.