Source:
Lyn Ragsdale, Vital Statistics on the Presidency (Washington,
D.C.: Congressional Quarterly Press, 1998), 167. Modifications
to the data for Coolidge and Hoover compiled by Gerhard Peters and
taken from Congressional Record (1929-32)
*a major speech is defined as live nationally televised and broadcast addresses to the country that preempt all major network programming. Inaugural Adresses and State of the Union Addresses are included