The Index Terms Look-up Tool

You can access the Index Terms Look-up Tool by clicking the Index Terms link on the Basic or Advanced Search forms.

The Index Terms Look-up Tool allows you to identify search terms and automatically paste them into your search string. The following types of terms are available, depending on where you accessed the Look-up Tool from:

• Selecting Subject Terms (includes geographical terms)
• Selecting Issuing Source Terms
• Selecting Serial Set Map Terms (U.S. Serial Set Digital Collection only)