US Treasury Department Specimen books, also known as BEP presentation albums, were published by the Bureau of Engraving and Printing (BEP) from the mid-1860s through the 1910s. Prepared upon request of the United States Secretary of the Treasury, albums were generally presented to Cabinet members, select Members of Congress, diplomats and visiting dignitaries. Some extant albums still in their original binding bear the name of the recipient impressed in gold lettering on the cover. While no two presentation albums have exactly the same contents, each book usually contained portraits, vignettes, and/or images of buildings. Specimen books which contain whole proof images of currency are extremely rare.