To find indexes relating to a specific newspaper:

Go to the catalogueclick on the Browse alphabetically tab and select Subjects from the Browse menu option and enter the name of the newspaper followed by the word, 'indexes'. For example:

Sydney morning herald indexes 
New York Times indexes 
Times (London England) indexes

To find indexes relating to a particular location, select the Browse Subjects option and enter the country name, followed by 'newspapers', followed by the state and town and then 'indexes'. For example:

australian newspapers new south wales sydney indexes

The following links lead to a browsable list of state and territory newspapers and relevant indexes:

australian newspapers new south wales
australian newspapers northern territory
australian newspapers queensland
australian newspapers south australia
australian newspapers tasmania
australian newspapers victoria
australian newspapers western australia