http://www.au.af.mil/au/awc/awcgate/usmchist/samar.txt
references and resources you MAY be able to get from your local public library on an inter library loan. See the reference desk.
http://www.grunts.net/usmc/1stmarines/notes.html
http://www.scuttlebuttsmallchow.com/samar.html
That oughta be enough to get ya good and started.