Original sentence: Plans for the living museum were first made in 1956 by a group of Arizona history enthusiasts who formed the "Pioneer Arizona Foundation, Inc"
Edited sentence: In response, they formed the "Pioneer Arizona Foundation, Inc".Plans for the living museum first came to light in 1956 by a group of Arizona history enthusiasts.Since its opening, the museum is still in Phase 1.These enthusiasts were distruaght by the thought of Many landmarks of Arizona history being destroyed in the name of progress