A letter written to T. N. Carswell from P. D. O'Brien, Pastor, First Baptist Church, Big Spring, Texas, dated July 26, 1961. O'Brien expresses his pleasure at having the occasion to meet and fellowship with Carswell even if only briefly all these years and reminisces about the "good days at old Simmons College". He expresses his pleasure in doing the favor [witnessing Mrs. Carswell's signature] and for the check which he put into the building fund "hoping it will yield dividends for all eternity".

A letter written to Brother "Dick" [Dr. P. D. O'Brien], Pastor, First Baptist Church, Big Spring, Texas, from T. N. Carswell, dated July 21, 1961. Carswell expresses his appreciation for the service he and Mrs. O'Brien rendered in witnessing Mrs. Carswell's signature to her will requesting that he use the enclosed check for the enlargement plans of their Church.