Flyer designed by Robert W. Limbert inviting people to visit the new national monument, established by U.S. President Calvin Coolidge to "preserve the unusual and weird volcanic formations."
A copy of the proclamation by President Calvin Coolidge creating the Craters of the Moon National Monument. The proclamation includes a map of the boundaries, approximately 39 square miles near Arco, Idaho. The rubber-stamped signature on the...
