Sorry if you haven't seen that before.

SRSLY

say you've found a book, like this one : https://library.si.edu/digital-library/book/fossilcetaceaofc00mche

Click on the image of any book and it should open in an Internet book reader.

At the top of the reader is a download icon (downward-pointing arrow) click on it to download the book.

Not all books are downloadable, and the search function seems to be a little obscure at times, but there's a lot to be found just be browsing the subject categories.

d/l = down loadable

geeze, that wasn't really all that difficult

....In just a few minutes I found a book of old Japanese art graphics which are very inspirational in the craft I do.......