This document is the prime source of information on the Auxiliary Maclom Willoughby would use in writing his U.S. Coast Guard in World War II. This is as close to an original source document for the WWII Auxiliary as you are ever likely to get.
Willoghby in turn is used by most Auxie historians when they write their histories.
If you have access to a library with interlibrary loan you can request a loan and photocopy it. It is nice that someone took the time to do an online version.