Popular Public Domain Melodies, Children’s Songs

Sources:

National Institute of Environmental Health Sciences (NIEHS)
National Institutes of Health (NIH) Department of Health and Human Services (DHHS)
http://kids.niehs.nih.gov/musicchild.htm

Public Domain Information Project:
http://www.pdinfo.com/list.php

Bus Songs.com
http://bussongs.com/

Popular Public Domain Melodies, Patriotic Songs and Marches

Sources:

National Institute of Environmental Health Sciences (NIEHS)
National Institutes of Health (NIH) Department of Health and Human Services (DHHS)
http://kids.niehs.nih.gov/musicpatriot.htm

Public Domain Information Project:
http://www.pdinfo.com/listPDsongs/PDPatrioticSongs.htm

Bus Songs.com
http://bussongs.com/