Hay John 1949 : Ocular infection : investigation and treatment in practice / David V. Seal, Anthony J. Bron, John Hay.
Hay John 1964 : The Victorians [videorecording] / produced and directed by John Hay and others.
Hay John Active 1823 : Journal of a horticultural tour through some parts of Flanders, Holland, and the North of France in the autumn of 1817 / by a Deputation of the Caledonian Horticultural Society [Patrick Neill, John Hay, and James MacDonald]
Hay John E 1943 : Tourism and climate change : risks and opportunities / Susanne Becken, John E. Hay.
Hay John G : Essentials of medical genomics / with contributions by John G. Hay and Harry Ostrer.
Hay Romanus 1625 1653 : Astrum inextinctum, siue Ius agendi antiquorum religiosorum ordinum, pro recipiendis suis monasterijs (quae nonnulli perperam extincta fuisse dicunt) & bonis ecclesiasticis, per S.C.Mtis edictum generale, vel Ius belli, & c. restituendis; è sacris canonibu / Hay, Romanus.
Hay Samuel A : African American theatre : a historical and critical analysis.