https://earthexplorer.usgs.gov/
The interface is really clunky but some of the data is amazing.
On the first tab on the right, select "Search Criteria", select "Coordinates" which allows you to put the points of a polygon on the map.
Next, select the "Data Sets" tab. Select "Aerial Photography | "Aerial Photo Single Frames"
The "Results". If there are any, thumbnails show up. You can then download the actual images which can be huge.
Once you get used to the interface, you can narrow the results down by date, etc.