For any materials that the Webster library does not have, you can obtain it through Interlibrary Loan found here
Norton Manual of Music Notation by 
Music Notation in the twentieth century: a practical guidebook by 
Principles of orchestration : with musical examples drawn from his own works by 
Creative orchestration ; a project method for classes in orchestration and instrumentation by 
Fundamentals of musical composition by 
Techniques of 20th century composition by 
Strategies for teaching strings: building a successful string and orchestra program by 
