Google Books is starting to be like drinking from a firehose. It occurred to me to search for less specific stuff, not just business graphics that I need for a current project. What happens when one searches for ‘typography’ in the public domain of books. One example is The Art and Practice of Typography.
Whoa! If you need specimens for lectures or projects, there is undoubtedly something in here for everyone.
Enjoy.
More_as_it_develops 