In its original black and silver Italian bolection moulding frame.

Exhibited: Royal Academy, 1939, under the title Evening in the Campangna, (with new date added 1930-9 but no changes to the composition).  'For Real: British Realists from the 20s and 30s', Museum MORE, Gorssel (September 15th, 2019 – January 5th, 2020).

The Thirties. The Arts in Italy Beyond Fascism, Palazzo Strozzi, Jan 2013.

Literature: Edward Halliday, Art for Life, 1925-1939,
Anne Compton, pp 18-21, reproduced p. 20 and on front cover.
British Murals & Decorative Painting 1920-1960,
Sansom & Co, 2013, pp.190-203;

Patrick Elliot & Sacha Llewellyn; True to Life, British Realist Painting in the 1920s & 1930s, July 2017, ISBN 978 1 911054 05 4,  Cat. 45 page 91

Hypnos was commissioned in 1927 by Sir Benjamin
Johnson, for his house Abbot's Lea, Liverpool, and completed
in 1928 during the last year of Halliday's Rome Scholarship.
Johnson was an insomniac, hence the choice of Hypnos, god of
sleep, and the painting hung in the corridor outside Johnson's
bedroom. The iconography was devised by Dorothy Hatswell, a
classicist and assistant librarian at The British School at Rome,
whom Halliday married in 1928. The painting includes portraits
of Halliday's friend and fellow Rome Scholar in Painting Robert
Lyon as well as Bobby Longdon, a friend and classics scholar
at The British School at Rome.