For this last discusstion topic, you must summarize /describe prison capacity in three distinct fashions: (1) rated capacity, (2) operational capacity, and (3) design capacity. 

The suggested keywords below can be tried on the SEARCH page of this guide and in any addditional database like ProQuest, Gale eBooks, and in Credo Reference.

• prison capacity
• prison crowding
• prison "rated capacity"
• prison "operational capacity"
• prison "design capacity"

Using the quotation marks tells the database to look for the words close together. 

You may also want to research prison poulation statistics in the Library database Statista. This database offers over 1 million statistics on 80,000 topics.

In the database, search "united states" prison population. See the screenshot below:

Additional keyword suggestions inlcude:

• u.s. prisons
• u.s. prison capacity
• "united states" prison capacity