The files posted here are in PDF. The books and theses are very large files and may be slow to load.
The PDFs are searchable. For instance, you can search for occurrences of the word "railroads" in a document. The searching is dependent on optical character recognition which, because of the irregular fonts and imperfect scans, often mistranslates letters and words. Skimming a passage will often find terms that the search feature missed.
The print in the newspapers is very small. Zooming in makes it possible to read the text but the images are still not crisp, because of the age and quality of the originals.