Randall Ross and Molly McCombs of Modernism 101 have a new graphic design catalog and its full of the key documents of 20th-century modernism. They state:
These publications bookend the development of the Graphic Design Industry from a typographic treatise underwritten by the educational wing of the German printing trade union to an elaborately-produced and self-financed exposition of the principles of visual design. Like doting parents we claim no favorites, but love them all regardless of their quirks and flaws.
Digital copies are available here. Or contact firstname.lastname@example.org.