Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- Creators: Battelle Memorial Institute. Technology Partnership Practice
- Creators: Goodman, Frank R.
- Creators: Patterson, E. O.
- Creators: R. P. Gilliland, R. P. Gilliland
- Resource Type: Text
![41216-Thumbnail Image.png](https://d1rbsgppyrdqq4.cloudfront.net/prism/s3fs-public/2021-04/41216-Thumbnail%20Image.png?VersionId=eKbqKxK_r74OjcjBOm96PbIzwc7F0Nj_)
Letter from R.P Gilliland to Carl Hayden regarding the sale of Bright Angel Trail (Ariz.) and construction of the President's Highway from Maine, AZ, to the Grand Canyon.
![41319-Thumbnail Image.png](https://d1rbsgppyrdqq4.cloudfront.net/prism/s3fs-public/2021-04/41319-Thumbnail%20Image.png?VersionId=G.qfJ75DJmDkwKtkdmGbEgedH8S_gFTW)
Letter from F. R. Goodman to Carl Hayden expressing Coconino County's interest in handing over Bright Angel Trail to the government provided a sufficient amount of money is appropriated to build a road from Maine to the Grand Canyon.
![42244-Thumbnail Image.png](https://d1rbsgppyrdqq4.cloudfront.net/prism/s3fs-public/2021-04-27/42244-Thumbnail%20Image.png?VersionId=MPuvOJJ7twwplNCJOBakQbN7cv6z8DPo)
This plan was undertaken by the Arizona Department of Transportation Multimodal Planning Division Aeronautics Group to evaluate and recommend a terminal area layout to meet anticipated terminal area demands.
![41095-Thumbnail Image.png](https://d1rbsgppyrdqq4.cloudfront.net/prism/s3fs-public/2021-04/41095-Thumbnail%20Image.png?VersionId=VgjwtO6B.wyzCT3wlJp2Q3s9S6SR6a4D)
Letter from E. O. Patterson to Secretary of the Interior on automobile fees in the park.
![41173-Thumbnail Image.png](https://d1rbsgppyrdqq4.cloudfront.net/prism/s3fs-public/2021-04/41173-Thumbnail%20Image.png?VersionId=JuvRJLFObRiatyx4NgWyL.ffilZKiiLG)
Letter from F. R. Goodman to Carl T. Hayden asking for clarification about the agreement to construct an approach road to the park
![67293-Thumbnail Image.png](https://d1rbsgppyrdqq4.cloudfront.net/prism/s3fs-public/2021-05-28/67293-Thumbnail%20Image.png?VersionId=dVUHqv.cEcusq8sbiiMTLofe_9.tDxVg)
Cooperative National Park Resources Studies Unit for University of Arizona, effects on Glen Canyon Dam releases on Grand Canyon River trips, a technical report, vol. no. 16.