Here is a fascinating resource. It is the Ward Hymnal for first and second year, published in 1918 (free download). It has all the main Catholic chant hymns in English and Latin, but don't expect staff lines and notes. Everything in marked in terms of solfeg but with numbers 1,2,3, etc. substituting for do, re, mi etc. It makes for excellent pedagogical material but of course it isn't particular useful for congregations. I suspect, however, that some teachers of music in Catholic parishes and schools can still use this resource.
However, I can't really see much point in putting it into print unless there is an obvious clamor for it.