Next Meetup

LECTURE: Celestial Navigation Along the Old Spanish Trail
This evening's event is co-sponsored by the: *** Mesa County Astronomy Club, hosting ** Old Spanish Trail Association (OSTA) * Colorado Archaeological Society- GJ chapter (CAS-GJ) Col. (Ret) Al Matheson will describe celestial navigation techniques that were in use during the historic period and share some of his collection of antique navigation instruments of the period. Col. Matheson is a Master Navigator and Senior Space Operations Officer with a decorated career in the Air Force. He is a noted speaker and lecturer on National Historic Trails, aviation archeology, and has been an active leader of the Old Spanish Trail Association. We will also discuss preliminary plans for a Star Festival tentatively planned for Late May, Early June 2019 time frame. Especially with 3 organizations promoting this event, it is suggested you arrive early if you hope to get a seat!

Mesa County Central Public Library

530 Grand Avenue · Grand Junction, CO

What we're about

Welcome to the meetup page/ calendar for the Grand Junction chapter ( of the 80+ year old Colorado Archaeological Society. This site we use mostly for the calendar function. To learn more about our chapter &/or to become a dues-paying member please visit .

We are one of 11 local chapters of the Colorado Archaeological Society (

Our location in western Colorado, just minutes from the Utah state line, puts us in the center of a 13,000-year-old American Indian habitation 'dig' site, rock art and ruins of many ages, history, culture and remnants of the old west, many phases of mining from silver and gold to uranium.

Along with all this to see, study and help preserve, we have access to private company, government and academic archaeologists to give monthly presentations. Among our members, many have the desire to share what they know in the form of frequent field trips.

With a past president of our chapter working as a librarian, it might be easy to guess that we have a Book Club. This is an informal group that meets most months at a downtown bookstore to discuss a book of arcaeological signifigance. We have occasionally been able to have the author join us for the book discussion.

You need to be a dues-paying member of our chapter to participate in field trips. Click this link ( reach our membership page where you can join online or print a membership form and join that way.

We look forward to seeing you soon at a meeting, book club or a field trip.

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