There are a number of Online websites that provide access to free, downloadable aerial photography for the United States.
EarthExplorer is a good place to look for individual aerial photography frames of anywhere in the United States. You can search and download images from a number of USGS aerial photography programs. Elevation data, Landsat data, and other satellite and remote sensing data is also available. Aerial photography in EarthExplorer includes:
Google Earth Pro is a free software you can download to your computer. One of it's capabilities is that it allows you view historic seamless aerial photography by zooming in to a location on the earth's surface and using the clock icon at the top of the map display. Available years vary widely, depending on where you're looking. In the United States, the earliest imagery available is typically from the 1980s.