Conversation so far:
What made Robert Dale Owen stand out as a congressman?
Robert Dale Owen was also involved in the debates about the annexation of Texas and an Oregon boundary dispute in 1844.
What was Robert Dale Owen's stance in the debates about the annexation of Texas and an Oregon boundary dispute in 1844?
Who else was involved in the debates about the annexation of Texas and an Oregon boundary dispute in 1844 besides Robert Dale Owen?
Are there any other interesting aspects about the Robert Dale Owen article besides his involvement in the debates about the annexation of Texas and an Oregon boundary dispute in 1844?
Robert Dale Owen, his brother David Dale Owen, and architect Robert Mills, were involved in developing preliminary plans for the Smithsonian Building.

Question: What was their vision for the Smithsonian building?
Self-contained rewrite: What was Robert Dale Owen, David Dale Owen, and Robert Mills' vision for the Smithsonian building?