Lincoln writes a notice to take depositions for defendant Thomas Cassidy in the case of Foster v. Cassidy. Lincoln also writes the acknowledgment of the notice, and Samuel H. Treat, the attorney for plaintiff Joseph C. Foster, signs it. Notice to Take Depositions, 5 January 1838, Foster v. Cassidy, Herndon-Weik Collection, Library of Congress, Washington, DC.

Lincoln writes and signs an affidavit before William Butler swearing that he believes Mary Ann Mitchell, Laura Rowena Mitchell, and Edward Mitchell, minor defendants in Francis v. Mitchell et al., are not residents of Illinois.Record.

["Being unexpectedly called from home . . . likely to detain me until a week previous to our next court, I take this method of informing those who have confided their business to . . . Walker & Hewett that whenever not adversely employed, either Messrs. Logan & Baker or Messrs. Stuart & Lincoln will give advice or assistance needed during my absence. J. Hewett."Sangamo Journal, 20 January 1838.