Adams George Archibald's signature.
Traced in Adobe Illustrator from https://books.google.ca/books?id=qwQFAAAAYAAJ&amp;pg=PA85-IA5&amp;lpg=PA85-IA5&amp;dq=adams+george+archibald+portrait+gallery&amp;source=bl&amp;ots=2Kmc1IxWls&amp;sig=oz8FArWnI2X4js2EE4oUktpBr7g&amp;hl=en&amp;ei=0mn_Sq_4FIeBngeMk5SXCw&amp;sa=X&amp;oi=book_result&amp;ct=result&amp;resnum=1&amp;ved=0CAgQ6AEwAA#v=onepage&amp;q=&amp;f=false
Adams George Archibald