The Colored People of Boston and vicinity, through the Colored National League , at a mass meeting held in the Charles Street Church, Tuesday evening, October 3d, 1899, addressed an Open Letter to President McKinley . The reading of the letter by Mr. Archibald H. Grimké , Chairman of the Committee, was listened to with marked attention and interest, and at the conclusion of its reading the letter was adopted by the meeting with significant unanimity. The letter was forwarded to President McKinle