To John R. Cannon 
J. R. Cannon War Department,
New-Albany, Ia. Washington, D.C., Sept 28th. 1864.
It will be impossible for me to attend your ratification meeting.
Thank you for the invitation A. LINCOLN
 ALS, DNA WR RG 107, Presidential Telegrams, I, 186. ``Sept 28th.'' in the date line is in Nicolay's handwriting. John R. Cannon telegraphed from New Albany, Indiana, on September 27, 1864: ``We have announced your expected presence here at our grand ratification meeting on saturday next can you come answer by telegraph at length if you please'' (DLC-RTL).