November 01, 1862
To Whom It May Concern:
Captain Derrickson, with his company, has been for some time keeping guard at my residence, now at the Soldiers' Retreat. He and his company are very agreeable to me, and while it is deemed proper for any guard to remain, none would be more satisfactory than Captain Derrickson and his company.
A. LINCOLN
Abraham Lincoln, Memorandum Regarding Captain Derrickson Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/268231