Books on line

I was just listening to 84  Charing Cross Road, and the plot is a New Yorker who orders rare books from a British book store in the 1950's.

but nowadays, thanks to Project gutenburg and Internet archives and similar sites, you can find all sorts of rare books on line.

For example, I was reading a book that mentions St Macrina, and voila, IA has it.
as an audiobook, which is great for my sore eyes.

and a lot of colleges have lectures on line....this one is a series of lectures on ancient Greece at Eastern Ill Univ