I'm tired of reading on this darn CRT screen, and I'm worried that you're just making some of this up. I'm afraid it's rather hard to find, but try Interlibrary Loan. A good illustrated overview of silent film music practices, as well as listings of the contents of the Library of Congress collections and some other silent film music archives, is given in Gillian Anderson, Music for Silent Films 1894-1929, Library of Congress, Washington, 1988. Oxford University Press, 1997. Also available online on the silent film bookshelf .
Several items written during the silent film era are available at the silent film bookshelf .