(Sarah of the Clue Crew reads from a printing press at the Bureau of Engraving and Printing in Washington, D.C.)  The color of the first ink used in printing $1 bills & the part of the sheet it goes on gives us this word that dates from 1862
The first of the works printed by the BEP was placed on sale 
on July 18, 1894, .... An addition was built on the south side of the building in 
1891.