Boston endorsement of Webster’s March 7th speech

Reported in the April 12, 1850 Liberator, placed under the Refuge of Oppression column, with a title The Late Satanic Speech of Daniel Webster. The article notes a letter of enthusiastic endorsement of Webster, which  appeared in the Boston Daily Advertiser of April 2nd.  The letter was signed by 56 men.  Then there is a notation, which may or may not have been a part of the letter, indicating that signers included Moses Stuart, Leonard Woods, Ralph Emerson, Jared Sparks, C.C. Felton, and 700  others!