Sergey
== Description == '''Hemlock Glen.''' Historical engraving showing a wooded glen with a man standing beside a boulder, from ''Philadelphia and Its Environs, and the Railroad Scenery of Pennsylvania'', with 225 illustrations (Philadelphia: J. B. Lippincott & Co., '''[1875]'''), printed p. '''85'''. The title page is undated in print; its pencilled date, the Library of Congress copyright stamp and the printed copyright verso identify 1875. The artist and engraver have not been securely identifi...