Murder at the Library of Congress by Margaret Truman

What could be better than a romp through the Library of Congress looking for a possible map and diary written by the Bartolome Las Casa who sailed with Columbus?  Not to mention the possibility of hidden treasure.  Legend has it that his view of that journey and it's landing would change our view of the beginnings of the Americas.  But first there is a stolen picture, the murder of the Library's Las Casas expert and all the fingers pointing to the unlikely involvement of the Library itself.  All those great Washington insider details just add a sense of reality to this nifty escapist mystery.