No hope of getting through to see an actual page of census on this first day of the release of the 1940 census, but, at least until the volunteers do their stuff and the census is indexed, here are the Christian County Enumeration Districts where you can search for residents at that time:

1940 Federal Census Christian County Missouri 25 Enumeration Districts

ED 22-1: BRUNER TOWNSHIP 20 pages
ED 22-2: CHADWICK TOWNSHIP INCLUDING SECTION 11 TOWNSHIP 26 RANGE 19, CHADWICK 12 pages
ED 22-3: EAST BENTON TOWNSHIP 8 pages
ED 22-4: FINLEY TOWNSHIP, OZARK CITY, CHRISTIAN COUNTY JAIL 26 pages
ED 22-5: FINLEY TOWNSHIP OUTSIDE OZARK CITY, CHRISTIAN COUNTY POOR FARM 32 pages
ED 22-6: GARRISON TOWNSHIP 8 pages
ED 22-7: LEAD HILL TOWNSHIP 6 pages
ED 22-8: LINCOLN TOWNSHIP, CLEVER TOWN 8 pages
ED 22-9: LINCOLN TOWNSHIP OUTSIDE CLEVER TOWN 24 pages
ED 22-10: LINDEN TOWNSHIP 14 pages
ED 22-11: LINN TOWNSHIP 18 pages
ED 22-12: LOGAN TOWNSHIP 8 pages
ED 22-13: MCCRACKEN TOWNSHIP 14 pages
ED 22-14A: NORTH GALLOWAY TOWNSHIP, HIGHLANDVILLE TOWN 2 pages
ED 22-14B: NORTH GALLOWAY TOWNSHIP OUTSIDE HIGHLANDVILLE TOWN 22 pages
ED 22-15: OLDFIELD TOWNSHIP 8 pages
ED 22-16: POLK TOWNSHIP, BILLINGS CITY, ST. JOSEPH S CONVENT - 13 pages
ED 22-17: POLK TOWNSHIP OUTSIDE BILLINGS CITY 30 pages
ED 22-18: PORTER TOWNSHIP, NIXA TOWN 10 pages
ED 22-19: PORTER TOWNSHIP OUTSIDE NIXA TOWN 26 pages
ED 22-20: SENECA TOWNSHIP 4 pages
ED 22-21: SOUTH GALLOWAY TOWNSHIP 26 pages
ED 22-22: SPARTA TOWNSHIP, SPARTA TOWN 6 pages
ED 22-23: SPARTA TOWNSHIP OUTSIDE SPARTA TOWN 16 pages
ED 22-24: WEST BENTON TOWNSHIP 11 pages