One of the things this special Marvel Treasury did was celebrate the 200th Birthday of the United States, which was celebrated heavily on July 4th, 1976.
Due to events in the story, Jack Kirby had a few pin up pages, where he explored the idea of Captain America, that, Cap was an institution, supporting America from colonial days, well into space and the future!
Best of all, in line with July being Western Comics Month, Cap even was ready to be part of the drive to expand the USA, heading out west to spread our country across North America!
These Captain America redesigns a wonderful "What If?" to the Captain America legend....