- [S30] Ruby L. Howse, letter to Roger Bartlett, 10 Sep 1973.
- [S32] Ruby L. Howse, letter to Roger Bartlett, 3 Nov 1973.
- [S33] Thomas S. Loop, letter to Roger Bartlett, 21 Aug 1975.
- [S39] Dorothy Norman, letter to Roger Bartlett, 1 Nov 1994.
- [S40] Marion Day Mullins, Henderson County, Texas Marriage Record 1860-1887 (n.p.: n.pub., n.d.).
- [S44] Cindy Dick, Abilene, Tex., letter to Roger Bartlett, 29 Sep 1994.
- [S45] Norma Rutledge Grammer, comp., Marriage Records of Early Texas 1824-1846 (Ft. Worth, Tex.: The Ft. Worth Gen. Soc'y, 1971).
- [S59] Ruby L. Howse, letter to Roger Bartlett, 21 May 1975.
- [S60] Todd Loop, letter to Roger Bartlett, 28 Aug 1975.
- [S169] 1900 U.S. Census, Navarro County, Texas.
- [S175] Supposition as to marriage.
- [S224] Juanita Mayberry, letter to Roger Bartlett, 15 Jun 1975.
- [S281] Robin Abb, letter to Roger Bartlett, 25 Aug 1997.
- [S282] Delayed certificate of birth (Texas Department of Health, Bureau of Vital Statistics) no. 31355 for Frances Imogene Bullington, filed with Bureau of Vital Statistics on 15 Sep 1961, per copy provided by Robin Abb to Roger Bartlett on 25 Aug 1997.
- [S382] Civil War military records relating to David F. Loop, provided by Harold B. Simpson Confederate Research Center, Hillsboro, Tex., to Roger Bartlett, 7 Oct 1996.
- [S383] Civil War military records relating to Josiah M. Loop, provided by Harold B. Simpson Confederate Research Center, Hillsboro, Tex., to Roger Bartlett, 7 Oct 1996.
- [S473] Suzette May, electronic mail to Roger Bartlett, 19 Apr 1999.
- [S494] Marriage license for W. R. Loop and Ella McLendon (original in possession of Roger Bartlett).
- [S495] Marriage license for L. L. Loop and B. M. Curtis, recorded in bk. 8, p. 41, Marriage Records, Navarro County, Tex. (original in possession of Roger Bartlett).
- [S573] Julie Kenner, electronic mail to Roger Bartlett, 29 May 2000.
- [S733] Francie Herring, family group sheet provided to Roger Bartlett, 27 Mar 2002.
- [S772] Dorothy Norman, Rt. 1, Box 292-H, Kingsland, Tex. 78639, letter to Roger Bartlett, 13 Dec 1994.
- [S796] Navarro County Cemetery Records, vol. 7 (Corsicana, Tex.: The Navarro County Gen. Soc'y, 1987).
- [S819] Gay Sample Greene, electronic mail to Roger Bartlett, 3 Mar 2003.
- [S922] Marriage Records, 1848-1909, Van Zandt County, Texas (Wills Point, Tex.: Van Zandt County Gen. Soc'y, 1978).
- [S927] Van Zandt County, Texas Cemetery Book 4 (Canton, Tex.: The Van Zandt County Hist. Comm., 1995).
- [S956] Nationwide Gravesite Locator, online http://gravelocator.cem.va.gov. This site is maintained by the U.S. Department of Veterans Affairs.
- [S970] Margaret Hutchison Nelson, electronic mail to Roger Bartlett, 25 Jun 2004.
- [S1092] Abilene Reporter-News, Abilene, Tex.
- [S1108] Social Security Death Index, online at http://tinyurl.com/RootswebSSDI
- [S1178] Standard certificate of death (Texas Department of Health, Bureau of Vital Statistics).
- [S1202] Fitzgerald Kenner, "William Fitzgerald Kenner," in Navarro County History, vol. 2 (Corsicana, Tex.: The Navarro County Hist. Soc'y, 1978), p. 332.
- [S1256] California Death Index, online at http://tinyurl.com/om9mmen
- [S1329] Stamford American, Stamford, Tex., online at http://www.myheritage.com
- [S1330] Anson Western Enterprise, Anson, Tex., online at http://www.myheritage.com
- [S1463] United States Social Security Death Index, online at https://www.familysearch.org
- [S1504] Frank W. Johnson, A History of Texas and Texans, ed. Eugene C. Barker and Ernest William Winkler (Chicago, Ill.: The American Historical Society, 1914), vol. V, p. 2205, s.v. "Pleasant F. Halbert," available online at http://www.rabgenealogy.com/ui221.htm
- [S1525] Louisiana Deaths, 1850-1875, 1894-1960, online at https://www.familysearch.org
- [S1529] Texas Birth Index, 1903-1997, online at https://www.familysearch.org
- [S1547] Texas Deaths, 1964-1998, online at https://www.familysearch.org
- [S1704] Victor L. Bennison, The Loop Family in America, online at http://theloopfamilyinamerica.org/. This 2012 online edition contains the text and photographs of the 1994 paper edition of this book except to the extent it includes some additions and corrections. This online version follows the chapters structure of the print version but does not use page numbers.
- [S1803] Obituary for Riley L. Loop, Houston Chronicle, Houston, Texas, 17 Jul 1972, sec. 4, p. 7, col. 2, online at https://tinyurl.com/yahdo83l, viewed on 23 May 2020.
- [S1855] Obituary for Lloyd Franklin Loop, The Houston Chronicle, Houston, Texas, 10 Jun 1938, online at https://tinyurl.com/bmk3tjee, viewed on 17 May 2021.
- [S1857] Obituary for Thomas Shrewsbury Loop, The Times-Picayune and The States-Item, New Orleans, Louisiana, 13 Mar 1981, online at www.genealogybank.com, https://tinyurl.com/vnphterj, viewed on 18 May 2021.
- [S1858] Obituary for Peter Cantine Loop, The Times-Picayune, New Orleans, Louisiana, 10 May 1994, online at www.genealogybank.com, https://tinyurl.com/na3syzer, viewed on 18 May 2021.
- [S1859] Obituary for Ruby Howse, Stamford American, Stamford, Tex., 12 Sep 1991, p. 4, cols. 7-8, online at Portal to Texas History at https://tinyurl.com/3v9p7mfb, viewed on 18 May 2021.
- [S1860] Obituary for Robert L. Howse, Stamford American and the Stamford Leader, Stamford, Tex., 16 Sep 1957, p. 1, col. 4, online at Portal to Texas History at https://tinyurl.com/9zt99tnr, viewed on 18 May 2021.
- [S1924] Standard certificate of birth (State of Texas), file no. 39744, for Lloyd Hickman, received by local registrar on 28 Aug 1918, image online at www.familysearch.org, https://tinyurl.com/52pzyucu, viewed on 1 Jul 2021.
- [S2050] Death notice for W. C. Garner, The Dallas Morning News, Dallas, Texas, 25 Mar 1912, p. 7, col. 6, image online at https://tinyurl.com/2p8ukwev, viewed on 2 Mar 2022.
- [S2206] Obituary for Frances Bullington Loop, Stamford American, Stamford, Texas, 19 Aug 1971, p. 3, col. 5, image online at Portal to Texas History, https://tinyurl.com/2hvtmr5c, viewed on 23 Sep 2022.