I made a mistake in the URL I just posted. The correction appears below.
There is a very good old maps library on line at Berkely Univ.
Access the home page and explore at:
This gives you a list of maps you can click on. It is fairly easy to
recognize the subject in the title codes. There are other maps available
but I have not yet learned to surf the site well enough to see them. It
may be necessary to register as an internet patron to access everything.