Excerpts of the President's News Conference
Mr. Bok is giving the bird sanctuary as a tract of land at this place. He is dedicating it as a bird sanctuary and putting up these bells to interest the birds in music.
Source: "The Talkative President: The Off-the-Record Press Conferences of Calvin Coolidge". eds. Howard H. Quint & Robert H. Ferrell. The University Massachusetts Press. 1964.
Calvin Coolidge, Excerpts of the President's News Conference Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/349282