The Sound Recordings Series contains sound recordings of interest to aeronautical history. The oldest recordings are a set of five 78-rpm disks from 1927: two 12-inch disks documenting Charles A. Lindbergh's visit to Washington, DC, on June 11th, including his reception by President Coolidge and his speech before the Press Club; and two 10-inch disks of popular songs and dances written to celebrate Lindbergh and his accomplishments. The series also includes four 12-inch 33 1/3-rpm recordings: a 1964 reproduction of a short 1935 speech by Amelia Earhart; a 1962 recording by the Greenbriar Boys of Amelia Earhart's Last Flight; a 1962 oral history of the first 20 years of Aerojet-General Corporation; and a recording issued in 1977 of Eddie Rickenbacker recalling his experiences as a World War I ace.