William C. Kosloski, 70, Lathrop, Mo., formerly of Kansas City, died Jan. 21, 1992, at Liberty Hospital. He was born in Plymouth, Pa., and lived in Kansas City from 1946 until he moved to Lathrop in 1981. Mr. Kosloski was a truck driver for Byers Transportation, later Holmes Transportation, for 33 years; he retired in 1981. He was a Marine veteran of World War II and a member of the Veterans of Foreign Wars. He was a member of the Lathrop Masonic Lodge, the Scottish Rite bodies and Ararat Shrine. Survivors include his wife, Faye Kosloski of the home; two half-brothers, Anthony Polunas and John Polunas of Euclid, Ohio; and a half-sister, Alvina Yenchek, Wilkes-Barre, Pa. Services will be at 11 a.m. Thursday at the Bailey Chapel, Lathrop. Masonic graveside services will be at the Lathrop Cemetery.