George R. · George R. R. · George R. Ryskamp;Peggy Hill Ryskamp · R.R.
Ancestry.com · Genealogical Publishing Company
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Finding Your Hispanic Roots | 978-0-8063-1517-1 (0-8063-1517-2) | 2009 |
| Finding Your Mexican Ancestors: A Beginner's Guide | 978-1-59331-307-4 (1-59331-307-1) | 2007 |