A few others that I have read and have had recommended to me:
"Manuscript Evidence," Ruckman
"In Awe Of Thy Word," G. A. Riplinger
"O Biblios, The Book," Alan O'Reilly
"Final Authority," William Grady
Do be warned, I have a relatively narrow literary exposure when it comes to books like you are searching for: I basically exhausted my entire knowledge of titles on this topic in this one single post!
