I am in the process of building a hyperlinked ebook of the Graduale Romanum, 1908 Editio Vaticana.
I’m also preparing individual booklets for each Mass. You can find the 1908 versions here, and the 1961 Solesmes versions are coming soon.
The 1908 Kyriale can be downloaded soon.
The 1961 Kyriale can be downloaded here.