DELMAR - Tade Louis Gerischer, Sr. of Delmar, died on Sunday, June 19, 2016, at Salisbury Nursing and Rehabilitation in Salisbury. Born in Davenport, Iowa, he was the son of the late Louis and Lois Gerischer. He owned and operated TLG Engineering in Salisbury for 25 years. Prior to opening his own business he spent many years consulting for two engineering firms in North and South Dakota. He served as president of American Society of Civil Engineers, Sioux Falls Chapter. He is survived by his wife of 47 years, Kristine Gerischer; daughter, Danelle Gerischer; son, Tade Gerischer Jr.; and two grandsons. He was preceded in death by two sisters, Carol Mokhtar and Jean Scherer. A private service will be held in Davenport, Iowa. Arrangements are in the care of Holloway Funeral Home in Salisbury.