Black and white print of automobile parked at an overlook. Automobile displays the sign, "Press Car Arizona Republican."

Black and white print of automobile parked near an overlook.

Letter from Stephen T. Mather to Carl T. Hayden advocating for a reduction in automobile fees for the South Rim entrance.

Letter from Stephen Mather to Carl T. Hayden regarding automobile regulations within Grand Canyon National Park.

Grand Canyon National Park General Regulations.