I was watching Barnaby Jones season 1 and in the epsiode "To Denise, with Love and Murder (04/22/73) " There are many scenes with the Governer's Mansion in it. Alot of close ups and side shots I had not seen before and one of the garage type stalls that are on the property which would be in the front left side. The interior scenes might be the actual interior because the design and shapes seem to fit the actual building. It also shows the mansion to be white.