Simple typographical errors were corrected.

Punctuation and spelling were made consistent when a predominant preference was found in this book; otherwise they were not changed.

This book uses both "secrecy" and "secresy", "employe" and "employee", "fulfil" and "fulfill".

Occasional erroneous page numbers replaced by sequentially correct ones.

Source generally used small numerals and periods for time of day; that style has been retained here.