July 21, 1843 Notice about Francis’s “highly inproved” Manifold Writer….”a letter and a duplicate can be made in one operation”….”the instrument used is an agate point, consequently it never wears…
July 21, 1843 Notice about Francis’s “highly inproved” Manifold Writer….”a letter and a duplicate can be made in one operation”….”the instrument used is an agate point, consequently it never wears…