• The Adoption History Project
• All About Adoption Research
• Court Records: Finding Your Ancestors
• Cyndi's List
<cyndislist.com>: See the Adoption and Orphans categories.
• The History of Adoption
• Legends and Legacies: Orphanages
• Olive Tree Genealogy: Orphans Records
• Orphan Train Heritage Society of America
• Orphanages: An American Local History Network Project
• Adoption Agencies, Orphanages, and Maternity Homes: An Historical Directory by Reg Niles (Phileas Deigh Corp.)
• Adoption in America: Historical Perspectives edited by E. Wayne Carp (University of Michigan Press)
• Family Matters: Secrecy and Disclosure in the History of Adoption by E. Wayne Carp (Harvard University Press)
With the free online program Google Earth, you can follow your forebears across the planet from the comfort of your personal computer.