1910 - US Census - Cordell Township, Washita, Oklahoma
Household .....Role .............Sex .....Age Birthplace
Willis L Burk ...Head ...........Male ....23 ..Texas
Irene M Burk ..Wife .............Female 15 ..Illinois
Dennis L Burk Brother ........Male ....20 ..Texas
Hazel Brown ..Sister-in-law Female 13 ..Illinois

Married first Cora Burnice Dunn in Washita County, Oklahoma on June 12, 1910.

1920 - US Census - Rainy Township, Washita, Oklahoma
Household ............Role .........Sex .....Age Birthplace
Dennis C Burk .......Head .......Male ....29 ..Texas
Cora B Burk ...........Wife ........Female 26 ..Alabama
Floyd V Burk ..........Son .........Male ....8 ....Oklahoma
Lesley E Burk .........Son .........Male ....6 ....Oklahoma
Ethel R Burk ..........Daughter Female 3 ....Oklahoma
Inas F Burk ............Daughter Female 1 ....Oklahoma
Margurete B Dunn Mother-in-law Female 57 ..Alabama

1930 - US Census - Rainy Township, Washita, Oklahoma
Household ........Role ..............Sex ......Age Birthplace
Dennis L Burk ...Head .............Male ....38 ..Texas
Hattie L Burk ....Wife ...............Female 38 ..Texas
Floyd B Burk .....Son ................Male ....18 ..Oklahoma
Leslie E Burk .....Son ................Male ....16 ..Oklahoma
Ethel R Burk ......Daughter .......Female 12 ..Oklahoma
Inez F Burk ........Daughter .......Female 11 ..Oklahoma
Leroy Burk .........Son ................Male ....9 ....Oklahoma
Delmar L Burk ...Son ................Male ....3 ....Oklahoma
Robert E Gerald Stepson ..........Male ....17 ..Oklahoma
Jewel Gerald .....Stepdaughter Female 11 ..Oklahoma

1940 - US Census - Willow Township, Caddo, Oklahoma
Household ......Role .........Sex .....Age Birthplace
Dennis L Burk .Head .......Male ....48 ..Texas
Hattie M Burk ..Wife ........Female 47 ..Texas
Delmar M Burk Son .........Male ....13 ..Oklahoma
Claudia Burk ...Daughter Female 5 ....Oklahoma