Theodore Roosevelt would like to see Abbott Handerson Thayer’s experiments while in New York City during the first week of December. However, he wishes Thayer would view his experiments from the practical standpoint that depending on the weather to prove them is contrary to what animals do. Additionally, animal coloration and concealment theories cannot go against established behavior patterns. Roosevelt elaborates on these and other points in his pamphlet. Thayer is welcome to visit Roosevelt at Oyster Bay. Record contains two copies of the letter, the final one and the original with edits.

Collection

Library of Congress Manuscript Division

Creation Date

1911-11-24

Creator(s)

Roosevelt, Theodore, 1858-1919

Recipient

Thayer, Abbott Handerson, 1849-1921

Language

English

Period

Progressive Party Candidate (1911-1912)

Repository

Library of Congress Manuscript Division

Page Count

6

Production Method

Typed

Record Type

Multi-image

Resource Type

Letter

Rights

These images are presented through a cooperative effort between the Library of Congress and Dickinson State University. No known restrictions on publication.

Citation

Cite this Record

Chicago:

Letter from Theodore Roosevelt to Abbott Handerson Thayer. [November 24, 1911]. Library of Congress Manuscript Division.
https://www.theodorerooseveltcenter.org/digital-library/o221359. Theodore Roosevelt Digital Library. Dickinson State University.

MLA:

Roosevelt, Theodore, 1858-1919. Letter from Theodore Roosevelt to Abbott Handerson Thayer. [24 Nov. 1911]. Multi-image.
Library of Congress Manuscript Division. Theodore Roosevelt Digital Library. Dickinson State University. March 13, 2026. https://www.theodorerooseveltcenter.org/digital-library/o221359.

APA:

Roosevelt, Theodore, 1858-1919., [1911, November 24]. Letter from Theodore Roosevelt to Abbott Handerson Thayer.
Library of Congress Manuscript Division. Theodore Roosevelt Digital Library. Dickinson State University.
Retrieved from https://www.theodorerooseveltcenter.org/digital-library/o221359.

Cite this Collection

Chicago:

Library of Congress Manuscript Division. https://www.theodorerooseveltcenter.org/collection/library-of-congress-manuscript-division. Theodore Roosevelt Digital Library. Dickinson State University.

MLA:

Library of Congress Manuscript Division. Theodore Roosevelt Digital Library. Dickinson State University. March 13, 2026. https://www.theodorerooseveltcenter.org/collection/library-of-congress-manuscript-division.

APA:

Library of Congress Manuscript Division. Theodore Roosevelt Digital Library. Dickinson State University. Retrieved from https://www.theodorerooseveltcenter.org/collection/library-of-congress-manuscript-division.