To the best of my knowledge, all of these .pdf files are in the Public Domain, or are available as long as source information is included.
You will need Adobe(tm) Acrobat Reader or similar software to read them. Get Acrobat Reader here.

Church Monument Handbook

Minerva Stone Conservation, Ltd

Monument Condition Survey Riverside Historic Cemetery, Denver, Colorado, USA
Scottish Clans  
The Highland Clans of Scotland: Their History and Traditions George Eyre-Todd, published 1923

Volume 1 | Volume 2

History of the Scottish Highlands: Highland Clans and Highland Regiments John S. Keltie, FSA, Editor
Lineage Files  
The Ancestors of Charlemagne - Addenda Christian Settipani, published 1990
Historical Topics/Timelines  
War Service Reference Guide: Timeline of U.S. Conflicts Family Tree Magazine
Timeline of U.S. Immigration Laws Family Tree Magazine
Reference/Research Aids  
Pedigree Chart Church of Jesus Christ of Latter Day Saints
Family Group Record Church of Jesus Christ of Latter Day Saints
Records Checklist Family Tree Magazine