Use * (asterisk) to truncate words. nation*
will retrieve nation, nations, national, etc.
+ AND operator
Use + (plus sign) on the beginning of a word it the word MUST appear in the search results (i.e. +African +American)
- NOT operator
Use - (minus sign) on the beginning of a word if you do not want the word to appear in the results. -Underground +Railroad
will retrieve results with the work "railroad" but not the word "underground."
If you do not use an operator, the search will default to OR. Drugs Medicine
will retreive records with the word "drugs" or the word "medicine" (or both words).
To search an exact phrase, surround it in double quotes, i.e. "Artillery at Gettysburg."