The verso sketches may be thumbnail sketches for paintings, possibly "Wedded" (c. 1881-82, Art Gallery of New South Wales, Sydney) and "Clytemnestra" (c. 1874, Leighton House Museum).
Frederic Leighton
Frederic Leighton, 1858
Frederic Leighton, 1877
Frederic Leighton, 1886
Frederic Leighton, 1865
Frederic Leighton, 1872
Frederic Leighton, 1878
Frederic Leighton, 1852