“ Any publication can also be purchased separately.
Most foreign countries have a distinctive colour for the binding of their official publications. That of the United States varies, but foreign diplomatic correspondence is bound in red. The United States government publications are not only on sale (as a rule) but are widely supplied gratis, with the result that important publications soon get out of print, and it is difficult to obtain access to many valuable reports or other information, except at a public library. German official publications are bound in white ”