Helen Davis, 71, of McHenry, died Monday in Northern Illinois Medical Center, McHenry. Mrs. Davis was a mail clerk at Abbott Laboratories in North Chicago for 17 years. Survivors include two daughters, Linda Wylie and Susan Marcomb-Grurek; four grandchildren; and five great-grandchildren. Visitation will be from 5 to 9 p.m. Wednesday in George R. Justen & Son Funeral Home, 3519 W. Elm St., McHenry. Services will be held at 10 a.m. Thursday in the funeral home.