From The Seaside Sibyl, 1882.

From Sharp Eyes, written and illustrated by William Hamilton Gibson, 1898.

"One mouse beats ten elephants."  From The Children's Newspaper, 1921.

From What's Up Teacher's Edition by Burkman et al., 1977.

Today's mice wearing cat masks are from St. Nicholas, 1915.

From The Children's Newspaper, 1921.

From Improvement Era, 1959.

From The New People and Progress, Teacher's Edition by Gray et al., 1955.

From Sea-side and Way-side by Julia McNair Wright and illustrated by C. S. King, 1936.

From The Children's Newspaper, 1929.

From St. Nicholas magazine, 1916.

From Wee Wisdom, 1953.

From Artful Anticks by Oliver Herford (1894).

From The Mouse's Tail by Helen Pettes and illustrated by Julia Greene, 1917.

From Alice's Adventures in Wonderland by Lewis Carroll, 1931.

From the Wizardry III: Legacy of Llylgamyn handbook.

"Can mice be kings?"  From Starting Points in Language Arts, Level 3 by Kambeitz & Roth, 1977.

From Lasell Female Seminary's 1911 yearbook.

From St. Nicholas, 1912.

We double checked, and you can definitely get the feeling of being a semi-rat by slightly adjusting the tips in How to Be Your Own Cat.  From The Gateway, 1968.