The dating of Spruce Tree House and other ruins in the Mesa Verde has been done by the study of tree-rings from original roofing timbers. If you are interested in how archæologists determine the dates, see the exhibit on tree-ring dating in the museum.

This trail guide booklet is not a government publication and is not included in your fee to enter Mesa Verde National Park. It is published and sold by the Mesa Verde Museum Association, a non-profit organization, whose aims are to help in the understanding and interpretation of the park story. Your comments and suggestions concerning this booklet will be appreciated.

CONSERVATION—YOU CAN HELP

If you are interested in the work of the National Park Service, and in the cause of conservation in general, you can give active expression of this interest, and lend support by alining yourself with one of the numerous conservation organizations which act as spokesman for those who wish our scenic and historic heritage to be kept unimpaired “for the enjoyment of future generations.”

Names and addresses of conservation organizations may be obtained at the Information Desk.

MISSION 66

MISSION 66 is a 10 year development program, now in progress, to enable the National Park Service to help you to enjoy and to understand the parks and monuments, and at the same time, to preserve their scenic and scientific values for your children and for future generations.

PUBLICATIONS OF MESA VERDE NATIONAL PARK

The books and cards described below are published by the Mesa Verde Museum Association, a non-profit organization. All proceeds are used to further research and interpretation in the Mesa Verde. You can purchase these items at the sales or information desks in the Museum lobby or order them from the association, Box 38, Mesa Verde National Park, Colorado. On mail orders, please include 10 cents postage for each publication.

INDIANS OF THE MESA VERDE, by Don Watson