From Squire to Prince; Being a History of the Rise of the House of Cirksena (published in 1901) is one of the books I discovered on Archive.org. The House of Cirksena is a history of the Counts of Ostfriesland and was written by Walter Phelps Dodge.
Like other books on Archive.org, it can be downloaded as a text file or as a PDF file. The image on this blog post comes from the PDF file.