Browse the DPLA collection visually
"The DPLA bookshelf is an easy way to search DPLA's books, serials, and journals. The darker the shade of blue, the more relevant the results. Click on a spine for details and related images. Book thickness indicates the page count, and the horizontal length reflects the book's actual height."
Many materials are available in Full-text from associated institutions. See example below:
[LINK] to publications on "American Poetry".