From Ancestry.com Wiki
I found reference to an old software (1999 Broderbund) ISBN 1579441904 titled: Immigration records immigrants to Pennsylvania, 1600s-1800s. I wonder if this may be able to help us with the Ferree family and their servants. I know much on the Ferree Family, so much is published in old history books. However, we know little or nothing, other than Oral History on many of the Early Indentured Servants that came from abroad via PA. I see some libraries have this CD as reference desk material in PA. I looked on eBay and nothing like it.
Broderbund published for Ancestry Magazine a decade or more ago and they do not market this material.