Although he lived primarily in London and Cambridge, Haddon traveled to Rome, Madrid, Venice, California, South America, Hawaii, and Asia.[3] He died in Cambridge on December 13, 1941, at age 77.[4]
Browne, Edith A., Peeps at Many Lands: Spain, with twelve full-page illustrations in colour by Trevor Haddon and Edgar T. A. Wigram, London: Adam & Charles Black, 1910
Calvert, Albert Frederick, Granada Present and Bygone, (illustrations by Trevor Haddon), J. M. Dent, London, 1908
Calvert, Albert Frederick, Southern Spain: Painted By Trevor Haddon, A. & C. Black, Ltd., London, 1908
Gould, Baring, A Book of the Rhine from Cleve to Mainz. With eight Illustrations in Colour by Trevor Haddon, London, Methuen 1906
Nye, G.H.F, Our Island Home (8 illustrations by Trevor Haddon), Bemrose & Sons, Limited, London, c. 1898
Okey, Thomas, The Old Venetian Palaces and Old Venetian Folk. With Fifty Coloured and Other Illustrations by Trevor Haddon, London. J. M. Dent & Co. 1907
Thirlmere, Rowland, Letters from Catalonia and other parts of Spain (illustrations by Trevor Haddon), Hutchinson & Co., London, 1905