Additional Hale Family Papers are in the Library of Congress. Additional papers of Enoch Hale are in the Divinity Library at Yale University. Additional papers of Ellen Day Hale, Philip Leslie Hale, and Lilian (Westcott) Hale are housed at the Archives of American Art. Additional papers of Edward Everett Hale and Edward Everett Hale, Jr., are housed in the New York State Library. Records of the Lend A Hand Society, founded by Edward Everett Hale, are in the Massachusetts Historical Society.

Related materials in the Sophia Smith Collection include the papers of Nancy Hale, daughter of Philip Leslie and Lilian (Westcott) Hale, and the Bush-Brown Family Papers.