Scope and Contents Boxes 52-61 contain materials similar to some other teaching files and thus have been grouped with them. However, these may also be materials gathered by Olpin for background research or reference for his books. Or, he could have used them for both purposes. It is unclear exactly what they should be titled. Also, Olpin seemed to organize these files in a rough alphabetical order (see post-its on materials). This order has been maintained.