“On this day, in home and church, in family and in public gatherings, the whole nation has for generations paid the tribute due from grateful hearts for blessings bestowed.”
From Calvin Coolidge’s 1923 Thanksgiving Proclamation

As President, Calvin Coolidge delivered a Thanksgiving Proclamation each year.  Thanks to the American Presidency Project, you can read the complete proclamations online.  Click on the year to take you to proclamation on their website.