2 entries match your criteria. Historical Markers and War Memorials in Harmon County, Oklahoma Clickable Map of Harmon County, Oklahoma and Immediately Adjacent Jurisdictions image/svg+xml 2019-10-06 U.S. Census Bureau, Abe.suleiman; Lokal_Profil; HMdb.org; J.J.Prats/dc:title> https://commons.wikimedia.org/wiki/File:Usa_counties_large.svg Harmon County, OK (2) Beckham County, OK (4) Greer County, OK (2) Jackson County, OK (0) Childress County, TX (9) Collingsworth County, TX (15) Hardeman County, TX (15) HarmonCounty(2) Harmon County (2) BeckhamCounty(4) Beckham County (4) GreerCounty(2) Greer County (2) JacksonCounty(0) Jackson County (0) ChildressCountyTexas(9) Childress County (9) CollingsworthCounty(15) Collingsworth County (15) HardemanCounty(15) Hardeman County (15) Adjacent to Harmon County, Oklahoma ▶ Beckham County (4) ▶ Greer County (2) ▶ Jackson County (0) ▶ Childress County, Texas (9) ▶ Collingsworth County, Texas (15) ▶ Hardeman County, Texas (15) Touch name on list to highlight map location.Touch blue arrow, or on map, to go there. GEOGRAPHIC SORT1► Oklahoma (Harmon County), Hollis — 100th Meridian Oklahoma/Texas State Line — On U.S. 62, on the right when traveling east. 2► Oklahoma (Harmon County), Hollis — 235 — Ron School — The Ron School Cubs — On Oklahoma Route 30 south of E1530 Road, on the right when traveling north.