Here are several websites where you can find Gospel songs that are in the public domain. Music published before 1923 is in the public domain (in the USA), which means it is free to obtain and use. Clicking on the links below will open in a new window or tab depending on your operating system.

1. Internet Archive: The Internet Archive offers a vast collection of audio recordings, including many Gospel songs in the public domain. You can search their music section for specific titles or artists.

2. Hymnary.org: This is a comprehensive database of hymns and Gospel songs, many of which are in the public domain. You can search for hymns by title, author, or lyrics.

3. The Cyber Hymnal: A large collection of hymns, this site includes lyrics, music, and information on thousands of hymns and Gospel songs, many of which are in the public domain.

4. THE OPEN HYMNAL EDITION 2014.06: This is a 390 page PDF file that is freely distributed.