Matching Items (2)
Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- Creators: American Journal of Science
- Creators: Tillotson, Miner Raymond
ContributorsTillotson, Miner Raymond (Author)
Created1935-10-08
Description
Letter from Miner Tillotson to Carl Hayden in regards to a request for two small blue spruce trees from the North Rim.
ContributorsMaxon, John H. (Author) / Campbell, Ian (Author) / American Journal of Science (Publisher)
Created1934-10-01
DescriptionExcerpt on the Archean Ripple Mark in the Grand Canyon.