One project that the chant scholar Holger Peter Sandhofe (1972-2005) undertook before his untimely death was to prepare an edition of a Missale Romanum from 1920. The book was not quite completed, but his draft PDF version has been available on the net for some years, and we have a copy of it on our server at https://media.musicasacra.com/pdf/romanmissal_classical.pdf .

In recent weeks, I've gone through the file to select its beautiful line art illustrations and make them available in separate files. The book contains about 50 illustrations. They appear to date from the 1890s, and I've made an album for them on the CMAA Images site:
http://images.musicasacra.com/photos/index.php?/category/13