Search Delaware Data Mil and it's retirement which provides a link to image services to possibly cover what you are looking for.
Thanks for your response. I’m a nontechnical person. Could you help me u/s “Delaware Data Mil and its retirement”? I got the photos through Landsat and Earth Explorer for 1982 and 1989, but not for the intervening years. Could you educate me with the actual link to explore what Delaware Data Mil is? Appreciate in advance. You will be helping in a huge way. Or email me at aptlaw@yahoo.com
Looks like it is the old state data site:
https://www.dgs.udel.edu/news/delaware-datamil-retired
There are photos listed here:
https://demac.udel.edu/data/aerial-photography/