Here are 8 different guides and helpful resources for people doing genealogy. In good condition, some  with a little edge wear or stains and tattered dust jackets but all very useful. Some have previous owners names in the front 

1) The Source - A Guidebook of American Genealogy  Edited by Arlene Eakle & Johni Cerny - 1984

2) Genealogy Online - Elizabeth Powell Crowe - 1998

3) The Researcher's Guide to American Genealogy  - Val D Greenwood - 1990

4) American Families - A documentary History  - Donald M Scott & Bernard Wishy Editors - 1882

5) Family Names - How Our Surnames Came to America  - J N Hook PHD 1982

6) Finding Your Roots -  Jeanne Eddy Westin  - 1977

7) Handy Book for Genealogists  - George B Everton Sr & Gunnar Rusmusson - 1963

8) Tracing Your Civil War Ancestors  - Bertram Hawthorne Groene - 1973