William David Clogston , 43, Denver, formerly of Overland Park, died Sept. 9, 1994, in Georgetown, Colo. Memorial services will be at 11 a.m. Saturday at the Unity Church of Overland Park. The family suggests contributions to the Brandon William Clogston College Fund. Mr. Clogston was born in Oklahoma City, grew up in this area and moved to Denver four years ago. Survivors include a son, Brandon William Clogston , Omaha; his mother, Halle J. Clogston , Overland Park; and two sisters, Sarah Smith, Bird City, Kan., and Kelli C. Malone, Shawnee. (Arrangements: Hennigan, Idaho Springs, Colo.)