Mary Thelma Schmoe
- Born: 21 Jul 1902, Jackson Hole, Teton County, Wyoming
- Marriage: Thurston Henry Slagle in 1915 in Washington
- Died: 6 Dec 1985, Yakima, Yakima County, Washington at age 83
- Buried: Tahoma Cemetery, Yakima, Yakima County, Washington
Noted events in her life were:
• Census, 1920, Washington, Yakima, Harrah County, District 198, Page 1 of 27. Age 17 yrs., single.
Mary married Thurston Henry Slagle, son of Allen Walter Slagle and Emma N. Park, in 1915 in Washington. (Thurston Henry Slagle was born on 8 Feb 1896 in Plattsmouth, Nebraska, died on 12 Oct 1971 in Portland, Multnomah County, Oregon and was buried in Tahoma Cemetery, Yakima, Yakima County, Washington.)