Frequently, people wanting to read more about Shiloh, the people involved, and the military units engaged, request "lists of references" that may be studied at leisure, to find out specific information. What follows is a significant list of references, provided courtesy of the Tennessee Secretary of State (scroll about halfway down):
http://sos.tn.gov/products/tsla/bibliography-tennessee-local-history-sources-hardin-county Shiloh Bibliography.
And although already posted someplace else on SDG site, below is the Tennessee Interactive Map:
http://sos.tn.gov/products/tsla/tennessee-civil-war-gis-interactive-map Skirmish and Battle locations in Tennessee.
Regards
Ozzy