ECHOcommunity.org is home to the ECHO library index. Physical books in the ECHO libraries represent a collection of often hard-to-find volumes, many out of print. 6300 books are currently listed in the library index.
https://www.echocommunity.org/en/search/books?keywords=*
Physical books are for use within the ECHO libraries where they are found. If in print, the ECHO Bookstore link, the Amazon link, or other source links may be found in the library index.
Good news! 400 of the books listed are downloadable !! Look for the download icon in the library index.
Downloadable books are also available on the ECHOcommunity mobile app. Search for “downloadable” in the Resource Search on either the mobile app or the web app. Downloadable books will also show up under various subject searches on the mobile app. All books are indexed for subject searches on the web app.