Some of the resources I found were:
"The Galt Families: Notes on their Origin and their History with Genealogical Lists" by Howard Spillman Galt, printed by the Sheffield Print Shop, Yenching University, Pekping, China. 163 pages
"History and Genealogy of the Ege Family in the United States, 1738-1911" by Rev Thompson P Ege, D.D., Printed by The Star Printing Co, 1911. 70+ pages
Correspondance from Mary Meares Galt to Mary Carrington, dated August 1961. 16 pages.
Family chart by Rogers Harrington Galt, with Mary Meares Galt, 1934 (3 sheets - 11"X17")
I have these in copies, if you want to pay for coping and mailing, I can send them to you. I did much of my research at the College of William and Mary.