Set of 4 pencil sketches of English and Scottish scenes, early 20th century

These sketches are lovely and show scenes of English and Scottish scenery. All are signed with initials WW and are dated and titled. The two center drawings are of Heather House in Glenramskill, and dated August 1914. The waterfall drawing on the left is titled On the Sprint and dated 1913, and the drawing on the right is titled On the Kent and dated June ?. All are matted and covered with glass and cloth framing.