Lake Viking Sales, LLC; Randy Vanderpool, Broker. Lake Viking, 111 Neptune Court, Gallatin, MO 64640. Phone: 660.663.2134. Licensed in Missouri. Keller Williams Realty, Inc. is a real estate franchise company. Each Keller Williams office is independently owned and operated. Keller Williams Realty, Inc. is an Equal Opportunity Employer and supports the Fair Housing Act.