ludwigrecordings.com - Chris Ludwig's Record Label
conbriorecordings.com - Con Brio Recordings
musiccentre.ca - The Canadian Music Centre
| composers21.com | The Living Composers Project |
| ndbooks.com | The Official Publisher of the poety of William Carlos Williams |
| http://musicalics.com/en/composer/Christopher-Ludwig | Chris Ludwig's entry in the Classical Composer Database |