Under the Antiquities Act of 1906, President Roosevelt declares Lassen Peak a National Monument, commenting that it is a site of special importance in tracing the history of volcanic activity of the Cascade Range. The precise area within Lassen Peak National Forest which Roosevelt so designates is defined by a map.

Collection

Lassen Volcanic National Park

Creation Date

1907-05-06

Creator(s)

Roosevelt, Theodore, 1858-1919

Language

English

Period

U.S. President – 2nd Term (March 1905-February 1909)

Repository

Redwood National Park Museum Collection

Page Count

2

Production Method

Printed

Record Type

Multi-image

Resource Type

Proclamation

Citation

Cite this Record

Chicago:

Proclamation for Lassen Peak National Monument. [May 6, 1907]. Lassen Volcanic National Park.
https://www.theodorerooseveltcenter.org/digital-library/o307692. Theodore Roosevelt Digital Library. Dickinson State University.

MLA:

Roosevelt, Theodore, 1858-1919. Proclamation for Lassen Peak National Monument. [6 May. 1907]. Multi-image.
Lassen Volcanic National Park. Theodore Roosevelt Digital Library. Dickinson State University. January 29, 2026. https://www.theodorerooseveltcenter.org/digital-library/o307692.

APA:

Roosevelt, Theodore, 1858-1919., [1907, May 6]. Proclamation for Lassen Peak National Monument.
Lassen Volcanic National Park. Theodore Roosevelt Digital Library. Dickinson State University.
Retrieved from https://www.theodorerooseveltcenter.org/digital-library/o307692.

Cite this Collection

Chicago:

Lassen Volcanic National Park. https://www.theodorerooseveltcenter.org/collection/lassen-volcanic-national-park. Theodore Roosevelt Digital Library. Dickinson State University.

MLA:

Lassen Volcanic National Park. Theodore Roosevelt Digital Library. Dickinson State University. January 29, 2026. https://www.theodorerooseveltcenter.org/collection/lassen-volcanic-national-park.

APA:

Lassen Volcanic National Park. Theodore Roosevelt Digital Library. Dickinson State University. Retrieved from https://www.theodorerooseveltcenter.org/collection/lassen-volcanic-national-park.