The building was deemed "architecturally significant because its Y-shaped plan is unique in Oklahoma and because its designer, Albert S. Ross, is one of Oklahoma's foremost architects....the Ada building is generally considered 'to be Ross's finest achievement.
The building is notable for its unique Y-shaped plan in Oklahoma and the skill of its designer, Albert S. Ross, who is recognized as one of Oklahoma's leading architects....the Ada building is commonly regarded as "Ross's most impressive design."