Have you seen the U.S. Mint's "Historian's Corner"?

They've begun uploading some of the source documents from their archives, including legislation for early commemorative issues, historic press releases, medal die registers, etc.

Their history of the Kennedy Half Dollar includes interesting recollections of the designers Gilroy Roberts and Frank Gasparro.

The Historian's Corner strives to preserve our heritage by sharing pieces of our history through a body of primary source material from which the public can find new insight on the relationships among numismatics, art, design, and government—from the birth of our Nation’s coinage to the present day.

The Historian’s Corner is our corner of the United States Mint’s web site, a place where you can:

• Examine rarely seen documents of the United States Mint
• Learn about the history of the United States Mint through primary documentation, as it was happening
• Gain access to an information resource that can be used to track the history of coinage in United States and in the future, conduct research on United States Mint programs and operations.

The Historian's Corner Web site currently contains a small amount of legislation, annual report excerpts, press releases, articles, and commemorative coin images from 1892 through 1954.