I'm seeking information on two daughters of Vernon Frederick Briggs who died in 1965. Their mother was Mary Skaggs Briggs. Mary b. 9 Apr 1957 and Kathy b. 9 Nov 1955 were given up for adoption about 1966 or 1967 to William R Knott. The girl's 3 sisters would like very much to get in touch with them. Thank you, Loretta