N. P. Sims’s second wife, Eliza, was his first cousin. Her sons, Oscar E. and Samuel M. Dunlap, were N. P.’s stepsons and also his first cousins once removed.
The Will of Eliza Sims was filed 7 March 1901 in Ellis County. She named husband, N. P. Sims; daughter, Ellie Sweatt [stepdaughter]; sons, J. F. Cross, John Cross, O. E. Dunlap, and S. M. Dunlap; and grandchildren, children of deceased daughter, S. A. Calhoun. Administrators: O. E. Dunlap and S. M. Dunlap.
Dallas Morning News, 16 June 1897: Burial of Mrs. Sims. Waxahachie, Ellis County, Texas, June 15. All the banks will be closed tomorrow in respect to Mrs. Nick Sims who died at Italy this morning. Mrs. Sims was one of the best known ladies in Ellis County, and was of a very prominent family. The funeral will take place from the residence of her son, O. E. Dunlap, at 3:30 tomorrow afternoon.
The Will of N. P. Sims was made 1 September 1898 and filed 3 June 1902 in Ellis County. He left all his real estate to his stepsons, O. E. Dunlap and S. M. Dunlap. “The residue of my estate to George H. Cunningham, O. E. Dunlap, and S. M. Dunlap, the survivors of them and their substitutes and successors in trust to establish and maintain a public library and lyceum in the city of Waxahachie, Ellis County, to be known as the N. P. Sims Library and Lyceum.”
After the bequest was made, the Waxahachie city council formally transferred a city park for the site of the library building. Ground was broken for the building, 20 November 1903. The first books arrived 3 June 1905 and 7,000 more books arrived 17 June 1905. The library was opened to the public, 16 November 1905.