This primary source comes from the Collection DDE-WHCF: White House Central Files (Eisenhower Administration), 1953 - 1961.
Full Citation: Telegram from Parents of the Little Rock Nine to President Dwight D. Eisenhower; 10/1957; OF 142-A-5 Negro Matters - Colored Question (5), 1957 - 1958; Official Files, 1953 - 1961; Collection DDE-WHCF: White House Central Files (Eisenhower Administration), 1953 - 1961; Dwight D. Eisenhower Library, Abilene, KS. [Online Version, https://www.docsteach.org/documents/document/telegram-parents-little-rock-nine-to-president-eisenhower, May 12, 2024]