
Given the following passage

"NARA also maintains the Presidential Library system, a nationwide network of libraries for preserving and making available the documents of U.S. presidents since Herbert Hoover. The Presidential Libraries include:",

answer the following question. Note that the answer is present within the text.

Question: This acronym maintains this, a nationwide network of libraries dedicated to preserving and making available the documents of U.S. presidents? 

Presidential Library system
